Vet help
These pages help you decide how fast to reach a clinic. They do not diagnose. A veterinarian who can see, hear, and touch the animal outranks any article, including this one.
If breathing is hard, the animal collapsed, or a male cat cannot urinate
Go to an open veterinary emergency hospital. If a toxin is involved and the pet is still stable enough for a phone call, the ASPCA Animal Poison Control Center is (888) 426-4435. A consultation fee may apply.
Open the when-to-see-a-vet checker
Symptom guides
Dog vomiting
How to tell a single upset stomach from an emergency when a dog vomits, including bloat, blood, toxins, and puppies.
Dog diarrhea
How long to watch mild dog diarrhea, and which stool changes mean parvo, bleeding, or dehydration.
Dog limping
How to judge a dog limp, from a torn nail to a fracture, cruciate tear, or back injury.
Dog itching
Fleas, allergies, and skin infections in dogs, plus the itch patterns that should be seen quickly.
Cat not eating
Why a cat who skips meals needs a faster plan than a dog, including hepatic lipidosis risk.
Cat vomiting
Hairballs versus illness when a cat vomits, and the patterns that need a veterinarian quickly.
Cat urinary problems
Straining, blood in the box, and the male-cat urethral blockage that cannot wait until morning.
Quiet or fluffed bird
Why a suddenly quiet, fluffed bird is a same-day avian emergency more often than a mood.
Reptile not eating
How to separate a normal seasonal slowdown from illness when a reptile stops eating.
Fish gasping at the surface
Surface gasping in aquarium fish: oxygen, ammonia, and what to change in the water tonight.
Rabbit or small mammal not eating
Why rabbits and guinea pigs who stop eating need a veterinarian within hours, not the next day.
How this section is meant to be used
Start with the checker if you are staring at a sick pet and need a speed: urgent, soon, or monitor. Open a symptom guide when you want the reasoning behind that speed. Breed and species profiles link here from their red-flag sections so the same advice is not copied onto every animal page.
Urgent means an emergency hospital now. Soon means a clinic today or the next open appointment, and an emergency hospital if your regular clinic is closed and the pet is worsening. Monitor means a bright animal with a mild, brief change, plus a promise to call if the picture shifts.
What we will not do
We will not name a dose of a human painkiller. We will not tell you a swelling belly can wait until morning. We will not pretend a telemedicine chat replaces oxygen, surgery, or a urine sample. The AI pet helper on this site is educational in the same way. If the pet is in danger, close the tab and drive.
Sources
Clinic decisions belong to the veterinarian who can examine the animal. This page is background reading.