Pet health answers, and what they really cost.

Pets can't tell you where it hurts, so changes are the signal: eating less, hiding, shaking, vomiting, limping, scratching, drinking or urinating more. Our symptom pages list the common causes for each sign, how a vet tells them apart, and what you can safely do at home in the meantime — such as why a dog is shaking, a cat throwing up, dog allergies, a dog ear infection or a dog UTI. Browse them all in the symptoms hub.

Every symptom page starts with three levels: go to an emergency vet now, call your vet today, or usually OK to monitor at home. For a suspected poisoning, speed matters. The Merck Veterinary Manual notes that for chocolate, signs usually appear within 6–12 hours, and that early decontamination by a veterinary team can reduce how severe the poisoning becomes [2]. That is why we always say: call first. Don't make your pet vomit unless a veterinarian or poison control tells you to. The dog and cat symptom checker walks you through the red-flag questions, and our pet poison emergency page has the numbers and steps.

The same procedure can cost very different amounts depending on the kind of clinic (nonprofit or low-cost, general practice, or specialty and emergency hospital), where you live, your pet's size and age, and whether it happens on a scheduled weekday or at night. Our vet expenses hub breaks bills into line items — exam, bloodwork, anesthesia, procedure, medication, follow-ups — and explains each range with its source and date. Start with the emergency vet cost, a routine vet visit cost, a dog x-ray cost, or how much it costs to spay a dog. If money is tight, our guide to affordable vet care covers low-cost clinics, veterinary schools, nonprofits and payment options.

Dogs do not age seven human years per year [3]. Researchers who studied the DNA of 104 Labrador Retrievers proposed a curve instead: human age = 16 × ln(dog age) + 31, which ages dogs quickly when young and more slowly later [6]. Try it in the dog years to human years calculator. Size matters too: the AVMA describes dogs as senior at roughly 8–11 years for small breeds, 8–10 for medium, 8–9 for large and 6–7 for giant breeds [3], while cats are generally considered senior after 10 [3]. For cats, International Cat Care equates the first two years with 24 human years, then 4 human years for each year after [4] — see cat years to human years.

Veterinary nutrition starts from the resting energy requirement, RER = 70 × (body weight in kg)^0.75, multiplied by a factor for life stage — for example 1.6 for a neutered adult dog and 1.8 for an intact one — and any individual dog may need up to 30% more or less [5]. The dog food calculator does the math and converts it to cups for your food. Treats count toward the daily total, so keep them a small share of it.

A pet insurance policy has four numbers that decide what you actually pay: the monthly premium, the deductible you pay before coverage starts, the reimbursement rate (the share of an eligible bill the policy pays back), and the annual limit. Plans range from accident-only to accident-and-illness, and the NAIC notes that pre-existing conditions may be excluded or covered only on a limited basis [7]. Read how pet insurance works, compare pet insurance for dogs and pet insurance for cats, see what accident-only pet insurance covers, then run your own numbers in the is pet insurance worth it calculator. We don't rank or recommend insurers.