Is My Dog or Cat Sick?
Free Pet Symptom Checker — 200 Common Symptoms Explained
Is Your Pet Showing a Symptom You Don’t Understand?
Is your dog refusing to eat?
Is your cat coughing or acting strange?
Is your pet vomiting, shaking, limping, scratching, or behaving differently?
As a pet owner, it can be stressful when your dog or cat suddenly shows a symptom you don’t understand.
Our free Pet Symptom Checker helps you explore 200 common dog and cat symptoms, understand possible causes, recognize warning signs, and learn when veterinary care may be needed.
You’re not alone…
Check Your Pet’s Symptoms
Start with what you can see. Search your pet’s symptom and explore the information available for it.
No sign-up • No subscription • Educational information
200 common dog and cat symptoms — all in one place.
What Is the Pet Symptom Checker?
PetSymptom Checker is a free online educational tool designed to help dog and cat owners explore common symptoms and understand what they may mean.
It covers 200 common symptoms across major health and behavior categories, making it easier to start with the symptom you can actually see instead of trying to guess what condition your pet may have.
For each symptom, the tool provides information about possible causes, what to consider next, and warning signs that may require professional veterinary attention.
Find a Veterinary Clinic Near You
Need professional veterinary care?
If your pet’s symptoms concern you, the safest choice is to contact a qualified veterinarian.
Enter your ZIP code and use the vet finder to locate veterinary clinics near you.
You can use the map to explore nearby clinics, check available information, and get directions.
Need Emergency Veterinary Care?
If your pet is experiencing a serious or rapidly worsening condition, don’t wait for an online tool to provide an answer.
Contact an emergency veterinary service or seek immediate professional care.
Our emergency vet search can help you locate emergency veterinary services in your area.
Need Emergency Veterinary Care?
Use “Emergency Vet Now” to search for emergency veterinary services in your area.
200 Symptom Across 16 Categories
Our Pet Symptom Checker organizes 200 common dog and cat symptoms into 16 categories, making it easier to find the information you’re looking for.
Appetite
🦷 Appetite — not eating, loss of appetite, overeating, rapid weight loss
Digestive
🫃Digestive & Appetite — vomiting, diarrhea, overeating, bloating, blood in stool
Respiratory
🫁 Respiratory — coughing, wheezing, sneezing, breathing difficulties
Skin
🐾 Skin & Coat — itching, hair loss, rashes, lumps, swelling
Mobility
🦴 Mobility & Movement — limping, weakness, difficulty walking, paralysis
Urinary
💧 Urinary — frequent urination, difficulty urinating, blood in urine, blockage
Behavior
🧠 Behavior & Mental Changes — aggression, hiding, confusion, anxiety, unusual behavior
Dental
🦷 Dental & Teeth — bad breath, tartar, swollen gums, tooth pain
Neurological
⚡ Neurological — head tilt, circling, tremors, seizures, balance problems
Eyes
👁️ Eyes — discharge, cloudiness, squinting, redness
Ears
👂 Ears — scratching, discharge, ear mites, infections
Emergency
🚨 Emergency — toxic ingestion, snake bite, heatstroke, collapse
Cardiovascular
❤️ Cardiovascular — heart-related symptoms, fainting, weakness, rapid breathing
Oral
👄 Oral & Mouth — ulcers, drooling, mouth growths
Reproductive
🐣 Reproductive — pyometra, mastitis, difficult labor, eclampsia
General
⚕️ General Health — fever, weight changes, anemia, and other general health concerns
Completely Free — Support It with a Small Donation
This pet symptom checker is and will always be 100% free. No sign-up, no subscription, no paywall.
If the tool helped your dog or cat, you can support the project with a small voluntary donation via PayPal — as little as $3 helps keep the site running and allows us to add more symptoms over time.
No PayPal account is required.
Disclaimer
PetSymptom Checker provides general educational information only. It is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is showing severe or life-threatening symptoms, please contact a licensed veterinarian or emergency animal hospital immediately.
Try the Pet Symptom Checker Now — It’s Free
Your pet can’t tell you what’s wrong. But now you have a tool that can help.
Discover the Powerful Pet Symptom Checker for Pet Owners
🐾 Open Pet Symptom Checker — Free
Free · No sign-up required · Works on mobile and desktop
**Sidnir Vieira**
Founder of TechHavela
A passionate pet and tech content creator, helping dog owners across the U.S. make smarter decisions for their furry friends.
