Common Pet Conditions

Search a symptom or problem to see what to do at home, when to see a vet, and what to never do.

🚨 This is general educational information, not veterinary advice or a diagnosis. Always consult your vet about your pet's health. In an emergency or suspected poisoning, call your vet or: ASPCA Animal Poison Control (888) 426-4435 / Pet Poison Helpline (855) 764-7661 (US).
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Featured guide: cat & dog ear hematoma

A swollen, squishy, blood-filled ear flap is a common problem, especially in cats and floppy-eared dogs. Read our full step-by-step guide: Cat & Dog Ear Hematoma β€” What to Do.

⚠️ Human medicines that are dangerous for pets

Never give these without explicit veterinary direction β€” several are a common cause of poisoning:

MedicineRisk to pets
Ibuprofen (Advil, Motrin)Toxic β€” stomach ulcers and kidney failure. Never give.
Acetaminophen (Tylenol)Toxic β€” often fatal to cats; dangerous to dogs. Never give.
Naproxen (Aleve)Toxic β€” even small doses cause ulcers and kidney damage.
AspirinOnly under vet direction; wrong doses cause bleeding.
Decongestants (pseudoephedrine)Toxic β€” dangerous heart and nervous-system effects.
Antidepressants & ADHD medsToxic β€” tremors, seizures, dangerous heart rate.
Vitamin D / cholecalciferolToxic in excess β€” kidney failure.

If your pet swallowed any human medication, treat it as an emergency and call a poison control line above.

When to go to the vet immediately

⚠️ Home care suggestions here are general first-aid only and assume an otherwise healthy adult pet. Puppies, kittens, seniors, pregnant pets, and pets with existing conditions need veterinary guidance sooner. When in doubt, call your vet.

Frequently asked questions

My pet seems a little off but is eating β€” do I need the vet?

Monitor closely for 24 hours. If symptoms persist, worsen, or you see any of the emergency signs above, call your vet. Trust your instincts β€” you know your pet's normal.

Can I use leftover antibiotics or ear drops from a previous problem?

No. Using the wrong medication or an old prescription can mask the real problem, cause resistance, or harm your pet. Always get a fresh diagnosis.

Are "natural" or essential-oil remedies safe?

Many essential oils (tea tree, citrus, eucalyptus) are toxic to cats and dogs. Don't apply or diffuse them around pets without veterinary advice.

Related: toxicity checkers Β· safe foods Β· vaccination schedule.