Dr. Sarah Chen
Veterinary Consultant & Senior Reviewer
Veterinary consultant and senior reviewer at PawCritic with 8 years of clinical experience in small animal practice. Sarah specializes in dog and cat health, nutrition, and product safety, translating clinical evidence into practical buying advice for pet parents.
Reviews by Dr. Sarah Chen (130)
Best Cat Trees 2026
The best cat trees of 2026 for every budget and apartment. Sturdy condos, tall towers, and sisal posts your cat will actually use.
Best Cat Window Perches 2026
The best cat window perches of 2026. Sturdy, sunny lounging spots for indoor cats, from suction-cup beds to wall-mounted shelves.
Best Dog Training Clickers 2026
The best dog training clickers of 2026, tested on real dogs. Our top picks for clear marker timing and faster positive-reinforcement trainin
Best Cat Litter 2026
Choosing the right cat litter can make a huge difference in your daily routine and your cat's comfort. In this guide, we review the best cat
Best Automatic Cat Feeder 2026: Smart Feeding Solutions
The best automatic cat feeders of 2026: camera models dropped under $80 and apps got reliable. Our updated picks cover portion control, sche
Best Cat Food for Kittens 2026
Updated for 2026: the best kitten foods with fresh formats and better DHA levels. What to look for on the label, plus a feeding schedule tha
Best Dog Leashes 2026: From Standard to Retractable Options
Our 2026 update to the best dog leashes: biothane options got cheaper, traffic handles went mainstream, and retractables still carry real ri
Best Cat Grooming Tools 2026
Regular grooming is one of the most important aspects of cat care 閳?and yet, it is all too often overlooked by pet parents. Whether you have
Best Cat Scratching Posts 2026
Is your sofa starting to look like a feline attack victim? Does your cat prefer your expensive curtains as a climbing apparatus? If you've a
Best Cat Toys 2026
As cat parents, we all want to provide our feline companions with the best possible entertainment and mental stimulation. In 2026, the cat t
Best Dog Dental Care Products 2026
As a responsible dog owner, you want your furry companion to live a long, healthy, and happy life. But here's a fact that many pet parents o
Best Dog Training Treats 2026
Best Dog Training Treats 2026: High-Value Treats for Effective Training Training your dog is one of the most rewarding experiences you can h
The 10 Best Dog Beds for Large Breeds in 2026
The 10 best dog beds for large breeds in 2026 - orthopedic memory foam, cooling gel options, and tough covers that survive 100-pound dogs. T
The 5 Best Cat Trees for Large Cats: Sturdy Condos for
The sturdiest cat trees for Maine Coons, Ragdolls, and other heavy cats — wide bases, 4-inch posts, and platforms that hold when a 20-pound
The 7 Best Dog Foods for Active Dogs and High-Energy Breeds
High-protein, fat-dense fuel for canine athletes — the performance dog foods that keep Border Collies, Malinois, and hunting breeds going al
Feather Plucking in Parrots: Causes, Treatment & What Actually Works
Feather plucking isn't just a bad habit — it's a medical red flag first, a behavior problem second. Here's how vets work through it, step by
How to Brush Your Dog's Teeth: A Step-by-Step Guide That Actually Works
Brushing your dog's teeth doesn't have to be a wrestling match. Here's the exact step-by-step method, the tools you need, and the mistakes o
Toxic Foods for Birds: What Parrots, Budgies & Cockatiels Can't Eat
Avocado, chocolate, apple seeds, alcohol — the foods that can kill a bird are more common than you think. Here's what to avoid and what to d
Toxic Plants for Cats: 20 Dangerous Houseplants & Safe Alternatives
Lilies, sago palm, and more: the houseplants that can kill cats, the symptoms to watch, and the greenery that's actually safe to keep around
Best Cat Trees for Small Apartments 2026
Small apartment, happy climber: the best compact cat trees of 2026, ranked on stability, footprint, and scratching value — plus wall-mounted
Best Dog Food for Puppies 2026: Complete Nutrition Guide
Puppies need growth formulas with controlled calcium and DHA — adult food won't cut it. The best puppy foods of 2026, with feeding schedules
Best Dog Shampoos 2026: Gentle Care for Every Coat
Human shampoo strips a dog's coat — here's what works. The best dog shampoos of 2026 for sensitive skin, itchy coats, puppies, and flea seas
Best Dog Food for Large Breeds in 2026: Top 5 Picks Reviewed
Large breed dogs need food built for their joints and growth. The five best large breed dog foods of 2026, ranked on calcium, joint support,
Leopard Gecko Shedding Problems: Causes, Prevention & When to Intervene
Stuck shed is the most common leopard gecko health problem — and one of the most preventable. Why sheds fail, how to fix them, and when to c
Male vs Female Cats: Which One Should You Adopt?
Male cats vs female cats: what actually differs — size, spraying, affection, health — and which one suits your home. The honest breakdown, m
Betta Fish Care: Tank Setup, Feeding, and Maintenance That Actually Keeps Them Alive
Bettas in bowls die years early. Here's the full care routine that keeps them alive and thriving: tank size, heating, filtration, feeding, a
Indoor vs Outdoor Cats: The Honest Trade-off Every Owner Faces
Indoor cats live longer. Outdoor cats live fuller. We break down lifespan, risks, enrichment, and how to give an indoor cat a life worth liv
How Often Should You Change Aquarium Water? The Real Schedule
The honest water change schedule for every tank type: how much, how often, and the five mistakes that turn water changes into fish killers.
How to Crate Train Your Dog: The Step-by-Step Method That Actually Works
Crate training done right turns a crate from a punishment box into your dog's favorite safe space. Step-by-step method, timing, and mistakes
Cat Hairballs: Why They Happen and How to Actually Prevent Them
Hairballs aren't normal — they're a symptom of excess shedding. Here's how grooming, diet, and a few products can cut them down to almost ze
Best Cat Litter Boxes 2026: Top Picks for Every Cat
A good litter box keeps your home clean and your cat happy. The wrong one can lead to messes, odors, and even behavioral issues where your c
Best Dog Toys for Aggressive Chewers 2026
Some dogs can destroy any toy in minutes. If you have a German Shepherd, Pit Bull, Golden Retriever, or any powerful chewer, you know the fr
Aquarium Myths Debunked: 15 Fish-Keeping Beliefs That Are Just Wrong
The three-second memory myth, inch-per-gallon math, starter fish and betta bowls — fifteen aquarium myths debunked, and which ones are dange
Dog Bloat (GDV): The Fastest-Killing Emergency Most Owners Misread
Gastric dilatation-volvulus kills large-breed dogs in hours. Learn the early signs, breed risk factors, and what to do in the first hour of
Reptile UVB Lighting: What Happens When You Get It Wrong (and How to Fix It)
Most reptile UVB setups quietly fail — bulbs that emit nothing, glass blocking all output, 18-month-old tubes doing zero. Here's how to catc
Household Items That Are Toxic to Dogs: The Complete Poison Danger List
Xylitol, grapes, human meds, antifreeze, sago palm and more. The full list of household poisons for dogs, symptoms, and what to do in the fi
Common Aquarium Fish Diseases: Symptoms, Treatment, and How to Prevent Them
Ich, fin rot, velvet, dropsy and more. How to spot aquarium fish diseases early, what actually treats them, and why water quality prevents m
How to Stop Your Dog From Pulling on Leash: A Step-by-Step Guide
Leash pulling makes walks miserable. This step-by-step guide shows you exactly how to train loose leash walking — from equipment to techniqu
Cat Food Recall Alerts: What to Do When Your Brand Gets Pulled
A cat food recall hits — now what? This guide covers how to check if your food is affected, symptoms to watch for, safe brands to switch to,
Guinea Pig vs Hamster: Which Pet Is Right for You?
Guinea pig or hamster? We compare size, lifespan, care needs, personality, and costs so you can pick the right small pet for your lifestyle
Best Cat Food for Indoor Cats 2026
Indoor cats gain weight easily and battle hairballs. These are the best indoor-specific cat foods of 2026, from budget picks to vet favorite
Best Cat Trees for Large Cats 2026
Maine Coons and other big cats need sturdy, stable cat trees. We tested the best heavy-duty trees of 2026 that won't wobble, tip, or collaps
Best Dog Beds for Large Breeds 2026
Big dogs need serious support. These are the best orthopedic dog beds for large breeds in 2026, from budget picks to 10-year-warranty beds.
Best Dog Crates for Travel 2026
Flying, road trips, or vet visits — these are the best travel dog crates of 2026, tested for safety, airline approval, and comfort.
Best Dog Food 2026: Complete Guide to Feeding Your Dog Right
The best dog foods of 2026, tested and ranked. From premium picks to budget-friendly bags, here's what to feed your dog at every life stage.
Dog Heatstroke: How to Spot It, Cool a Dog Down, and Know When It's an Emergency
Heatstroke kills dogs fast. Here's how to spot the early signs, cool a dog down the right way, and know when a trip to the emergency vet can
Aquarium Gravel vs Sand: Which Substrate Is Actually Better?
Gravel or sand for your aquarium? We compare cost, cleaning, plant growth, and safety for bottom dwellers so you can pick the right substrat
Reptile Myths Debunked: 12 Things New Owners Get Wrong
Heat rocks are fine, sand causes impaction, reptiles don't need vet care — we debunk 12 reptile myths that new owners believe, with the real
How to Tell If Your Bird Is Sick: 15 Warning Signs You Shouldn't Ignore
Birds hide illness until it's critical. Learn the 15 early warning signs — droppings, behavior, breathing, posture — and when to call the ve
Wet Dog Food vs Dry Dog Food: Which Is Actually Better?
Wet or dry dog food? We compare nutrition, dental health, cost, and convenience so you can pick the right one for your dog — no marketing, j
15 Cat Myths Debunked: What's True and What's Total Nonsense
Milk is good for cats, they always land on their feet, indoor cats don't need vaccines — we debunk 15 of the most common cat myths with real
Common Household Dangers for Pet Birds: Hidden Hazards Every Owner Must Know
Discover the hidden dangers lurking in your home that can harm pet birds. From Teflon cookware and toxic foods to ceiling fans and heavy met
How to Choose Your First Pet Reptile: A Beginner's Complete Decision Guide
There's a moment in every reptile keeper's origin story that separates the successful from the regretful: the moment they realized that a re
How to Cycle an Aquarium: The Complete Nitrogen Cycle Guide for Beginners
Master the aquarium nitrogen cycle with this complete step-by-step guide. Learn fishless and fish-in cycling methods, avoid common beginner
Best Self-Cleaning Litter Boxes & Automatic Litter Systems 2026
The best self-cleaning litter boxes and automatic litter systems of 2026, tested for odor control, safety, and ease of cleaning…
Best Dog Cooling Vests & Summer Heat Protection 2026
Keep your dog safe in summer heat with the best cooling vests of 2026. We tested 8 top products for cooling power, fit, and durability, plus
Best Dog Snuffle Mats & Foraging Enrichment Toys 2026
Why Your Dog Needs a Snuffle Mat: The Science of Canine Foraging Here's a number that should make every dog owner pause: the average domesti
Best Cat Outdoor Enclosures, Catios & Cat Tents 2026
Why Every Indoor Cat Deserves Safe Outdoor Access There's a moment every cat owner recognizes: your indoor cat pressed against the window, t
Best Dog Potty Pads & Indoor Potty Solutions 2026: 9 Tested Products for Stress-Free Housebreaking
From disposable training pads with carbon odor control to real grass subscription services and washable mats, discover the 9 best indoor pot
Best Cat Scratch Deterrents & Furniture Protectors 2026: 9 Products That Actually Work
Stop your cat from destroying your couch without declawing. We tested 9 scratch deterrents including adhesive strips, pheromone sprays, nail
Best Dog DNA Test Kits 2026
Every mixed-breed dog owner has been asked the question: "What kind of dog is that?" And for decades, the best answer was a shrug and a gues
Best Cat Window Perches & Wall Furniture 2026
Cats are vertical creatures by nature. In the wild, felines spend a significant portion of their day elevated — surveying territory from tre
Best Cat Interactive Toys & Puzzle Feeders 2026
Indoor cats face a unique challenge: their natural instincts to hunt, stalk, pounce, and explore are triggered daily, but their environment
Best Dog Remote Training Collars & eCollars 2026
Looking for a reliable remote training collar? We tested 14 eCollars for range, reliability, safety features, and build quality to find the
Best Dog Pools & Water Play Equipment 2026
Keep your dog cool and active this summer with our expert-tested picks for pools, splash pads, sprinklers, and water toys…
Best Cat Flea & Tick Prevention Products 2026
Best Cat Flea & Tick Prevention Products 2026: Top 10 Treatments Tested Published on July 24, 2026 by PawCritic — Cats Category Fleas and ti
Best Cat Litter Mats & Tracking Control 2026
Tired of finding litter trails across your entire house? We tested 16 cat litter mats for tracking control, durability, and ease of cleaning
Best Dog Waterproof Boots & Paw Protection 2026
Every dog owner has witnessed the heartbreak of a limping pup after a winter walk — tiny ice balls wedged between paw pads, cracked pads fro
Best Cat Water Fountains & Filters 2026
Cats prefer running water. We tested 12 cat water fountains to find which ones stay quiet, clean, and keep the flow going for even the picki
Best No-Pull Dog Harnesses 2026
Transform your walks with the best no-pull harnesses that stop dragging humanely. We tested 14 front-clip and dual-clip harnesses for puller
Best Cat Calming Products & Anxiety Relief Solutions 2026
Cat anxiety affects millions of felines worldwide. We tested 15 calming products — pheromone diffusers, compression wraps, calming treats, a
Best Dog Poop Bags & Eco-Friendly Waste Solutions 2026
Every dog owner faces the daily reality of poop duty. We tested 20+ poop bag brands for durability, eco-friendliness, odor control, and valu
Best Cat Slow Feeders & Puzzle Bowls 2026
Does your cat gulp food and throw up? Slow feeders and puzzle bowls can help! We tested 10 slow-feed bowls, puzzle feeders, and interactive
Best Dog Raincoats & Waterproof Gear 2026
Don't let rain ruin your walk! We tested 12 dog raincoats, waterproof jackets, and full-body suits to find the 8 best options for keeping yo
Best Cat Probiotics & Digestive Health Supplements 2026
Give your cat the gift of digestive wellness. We tested 14 cat probiotic supplements — powders, chews, and capsules — to find the 8 best opt
Best Cat Litter Deodorizers & Odor Control Systems 2026
Nobody loves the smell of a litter box. We tested 16 cat litter deodorizers, odor filters, enzymatic cleaners, and air purifiers to find the
Best Dog Calming Aids, Anxiety Wraps & Calming Treats 2026
Calming your anxious dog has never been easier. We tested 18 calming aids, anxiety wraps, calming treats, pheromone diffusers, and calming b
8 Best Cat Food Toppers and Meal Mixers in 2026
Cat food toppers are the secret weapon for picky eaters. Our 2026 review covers 8 top meal mixers that boost nutrition, entice finicky felin
7 Best Dog Muzzles for Training, Grooming, and Safety in
Looking for the best dog muzzle in 2026? We review 7 top-rated muzzles for training, grooming, vet visits, and everyday safety…
Best Dog Ear Cleaners & Infection Treatments 2026
Ear infections are the second most common reason dogs visit the vet. We tested 15 ear cleaners, wipes, and infection treatments to find the
Best Cat Microchip Pet Doors & Electronic Access Systems
Traditional cat flaps let everything in. We tested 12 microchip pet doors to find the 8 best for secure, selective entry — from Wi-Fi smart
Best Dog Agility Training Equipment & Obstacle Courses 2026
Dog agility is one of the fastest-growing canine sports. We tested 15 obstacle kits, tunnels, jumps, weaves, and contact equipment to find t
Best Dog Seat Covers & Car Protectors 2026
Best Dog Seat Covers & Car Protectors 2026: Complete Guide to a Clean, Safe Ride Published on July 4, 2026 by PawCritic — Dogs Cat
Best Cat Play Tunnels, Tents & Activity Tubes 2026
Cats need vertical and horizontal spaces to explore, hide, and pounce. We tested 14 cat play tunnels, tents, and activity tubes to find the
Best Dog First Aid Kits & Emergency Supplies 2026
Best Dog First Aid Kits & Emergency Supplies 2026: Be Prepared for Any Canine Crisis Published on July 2, 2026 by PawCritic — Dogs
Best Cat Heating Pads & Warming Beds 2026
Senior and short-hair cats need extra warmth. We tested 22 cat heating pads and warming beds including self-warming, electric, and microwava
Best Dog Winter Coats & Jackets 2026
Winter is here and your pup needs protection. We tested 28 dog winter coats and jackets to find the 8 best options for warmth, waterproofing
Best Cat Trees & Condos 2026
Indoor cats need vertical territory for optimal health and happiness. We tested 28 cat trees, condos, and scratching posts to find the 10 be
Best Cat Litter Box Enclosures & Hidden Furniture 2026
Nobody loves looking at a plastic litter box. We tested 22 cat litter box enclosures & hidden furniture pieces that disguise the box as end
Best Dog Waste Disposal & Poop Bag Systems 2026
Dog waste is an environmental pollutant & a daily chore. We tested 25 poop bag systems, in-ground digesters, rolling scoopers, & indoor cani
Best Dog GPS Trackers & Smart Collars 2026
Losing track of your dog is every owner's nightmare. We tested 10 GPS trackers and smart collars to find the best real-time location trackin
Best Cat Nail Care Products 2026
Trimming your cat's nails doesn't have to be a bloody battle. We tested 14 nail clippers, 8 nail grinders, 5 brands of soft nail caps, and 1
Best Dog Flea, Tick & Parasite Prevention 2026
Every dog owner knows the dread of spotting a flea scurrying across their pup's belly or pulling a fat tick off their ear.
Best Cat Collars 2026
A cat collar is a safety device first and a style statement second. We tested 38 collars over 10 weeks, evaluating breakaway mechanisms, mat
Best Dog Collars 2026
A collar is your dog's most essential accessory — it holds their ID, connects to their leash, and communicates vital info to the world…
Best Cat Food 2026
Feeding a cat is fundamentally different from feeding a dog. Dogs are omnivorous scavengers that can survive on a wide variety of diets.
Best Dog Crates 2026
A crate is one of the most important purchases you'll make for your dog—it serves as a den, a travel safety zone, a housetraining tool, and
Best Cat Trees & Scratching Posts 2026
Vertical territory is not optional for indoor cats—it's a biological necessity. We tested 12 cat trees, scratching posts, and wall-mounted c
Best Dog Harnesses 2026
A collar can damage your dog's trachea and spine. We tested 14 dog harnesses across 8 weeks with dogs from 6 to 110 pounds, evaluating no-pu
Best Cat Food Bowls, Slow Feeders & Elevated Stands 2026
That cheap plastic bowl from the pet store? It might be the reason your cat throws up after every meal, scratches at their chin constantly,
Best Dog Cooling Mats & Elevated Beds 2026
When summer temperatures soar, your dog feels the heat even more than you do. We tested 12 cooling mats and elevated beds across 8 weeks of
Best Dog Leashes 2026
A leash is your most-used piece of dog gear 鈥?yet most owners settle for the cheap nylon strap that came with the puppy starter kit…
Best Cat Calming Products & Pheromone Diffusers 2026
Urinating outside the box, hiding under the bed, fighting with other cats 鈥?feline anxiety can tear your household apart…
Best Dog Life Jackets & Swimming Gear 2026
Not every dog is a natural swimmer 鈥?and even strong swimmers can tire out fast. Whether you're boating, paddleboarding, or hitting the beac
Best Cat Dental Care Products 2026
By age three, 70% of cats have some form of periodontal disease 鈥?and since cats are masters of hiding pain, most owners have no idea until
Best Dog Ramps & Stairs 2026
Every jump onto a tall bed, every leap out of an SUV, every scramble onto the couch 鈥?for a dog with arthritis, hip dysplasia, or simply sho
Best Cat Carriers & Travel Backpacks 2026
Vet visits. Moving day. Emergency evacuations. Road trips. For a species that famously hates change, getting a cat into a carrier is often t
Best Dog Puzzle Toys & Slow Feeders 2026
Why Mental Stimulation Is Just as Important as Physical Exercise Ask any dog trainer what the most common mistake dog owners make is, and th
Best Cat Beds & Window Perches 2026
Cats sleep an average of 12-16 hours a day 鈥?which means the bed you choose is one of the most important purchases you'll make for your feli
Best Dog Nail Grinders & Clippers 2026
Why Nail Care Matters More Than You Think Every dog owner knows they should trim their dog's nails regularly. But knowing and doing are two
Best Dog Beds 2026
A great dog bed is more than a sleeping spot 鈥?it's an investment in your dog's joint health, spinal alignment, and overall wellbeing…
Best Self-Cleaning Litter Boxes 2026
Why Self-Cleaning Litter Boxes Are Worth Considering Let's be honest about what scooping a litter box actually entails: you're standing ther
Best Cat Trees 2026 鈥?Scratching Posts, Condo Towers &
Cat trees are essential furniture for indoor cats 鈥?they provide vertical territory for climbing, safe perches for observing their domain, a
Best Dog Harnesses 2026 鈥?No-Pull, Step-In & Adventure
Finding the right dog harness in 2026 isn't just about stopping pulling 鈥?it's about comfort, safety, and matching your lifestyle.
Best Cat Water Fountains 2026
Cats are descended from desert-dwelling ancestors and have a naturally low thirst drive 鈥?they evolved to get most of their moisture from pr
Best Dog Cooling Vests 2026
Dogs don't sweat like humans 鈥?their primary cooling mechanism is panting, which is far less efficient in high heat and humidity…
Best Cat Harnesses & Leashes 2026
Taking your cat outdoors on a harness isn't just trendy 鈥?it's one of the best things you can do for their physical and mental health…
Best Dog Joint Supplements 2026
As dogs age, their joints take a beating. From Golden Retrievers prone to hip dysplasia to active working dogs who never stop moving, joint
Best Dog GPS Trackers 2026
After extensive research and testing, we've compiled our top picks for Best Dog GPS Trackers 2026: Keep Tabs on Your Adventure Buddy. Each p
Best Cat Litter for Multiple Cats 2026: Heavy-Duty Solutions
After extensive research and testing, we've compiled our top picks for Best Cat Litter for Multiple Cats 2026: Heavy-Duty Solutions. Each pr
Best Cat Vitamin Supplements 2026: Boost Your Cats Health
After extensive research and testing, we've compiled our top picks for Best Cat Vitamin Supplements 2026: Boost Your Cats Health. Each produ
Best Dog Shampoo 2026: Gentle Cleansing for Sensitive Skin
# Best Dog Shampoo 2026: Gentle Cleansing for Sensitive Skin Source: American Animal Hospital Association (AAHA): AAHA guidelines report tha
Best Cat Food 2026: Premium Nutrition for Your Feline Friend
# Best Cat Food 2026: Premium Nutrition for Your Feline Friend Source: American Association of Feline Practitioners (AAFP): The AAFP recomme
Best Cat GPS Trackers 2026: Know Where Your Cat Goes
# Best Cat GPS Trackers 2026: Know Where Your Cat GoesFor outdoor cats or escape-prone indoor cats, a GPS tracker provides invaluable peace
Best Dog Harnesses 2026: Comfort and Control on Every Walk
# Best Dog Harnesses 2026: Comfort and Control on Every WalkA quality dog harness is one of the most important investments you can make for
Best Dog Treats 2026: Healthy Rewards Your Pup Will Love
# Best Dog Treats 2026: Healthy Rewards Your Pup Will LoveDog treats are more than just snacks-they're powerful tools for training, bonding,
Best Automatic Cat Feeders 2026
# Best Automatic Cat Feeders 2026: Smart Feeding on Your ScheduleAutomatic cat feeders have evolved from simple timer-based dispensers to so
Best Cat Treats 2026: Tasty Rewards Your Cat Will Crave
# Best Cat Treats 2026: Tasty Rewards Your Cat Will CraveFinding the perfect cat treat is about more than just spoiling your feline friend-i
Best Catnip Toys 2026: Irresistible Fun for Your Cat
# Best Catnip Toys 2026: Irresistible Fun for Your CatCatnip has been delighting felines for centuries, and modern catnip toys combine this
Best Dog Carriers 2026: Safe Travel Solutions for Dogs
# Best Dog Carriers 2026: Safe Travel Solutions for DogsTraveling with your dog requires careful planning, and choosing the right carrier is