Symptom guides

Every page starts with the same question: go now, contact your vet today, or record and watch.

By animal

Body system · Accidents, poisons and emergencies

My cat has touched a lily — what now?

The poison is in the flowers, leaves, pollen and the vase water, and a cat that licks pollen off its coat has had enough. There is no observation period on this page: any suspected exposure goes to a vet now.

My cat fell from a height — what now?

Injuries from a fall are not always visible at once. A cat that walks away can still have bruised lungs, a collapsed lung, or a fractured pelvis or jaw, and only an examination finds them.

Body system · Digestion

My cat is vomiting — what now?

A single vomit is usually not serious. Repeated vomiting, blood, or a cat that will not eat afterwards needs handling today. Work out which one you are looking at.

My dog is vomiting — what now?

Vomiting in dogs is common, but blood, coffee-ground material, or repeated retching that brings nothing up are all situations that cannot wait.

My cat is constipated — what now?

Separate two things: straining and producing nothing, versus no urge at all. The first can be constipation, but it can also be a urinary problem, and those are handled differently.

My cat has diarrhoea — what now?

Most cat diarrhoea settles within a few days, but kittens, senior cats, and stool with blood or black stool cannot wait. Start with the colour and the shape.

My dog has diarrhoea — what now?

Diarrhoea in dogs is common, and puppies and older dogs dehydrate faster. Check for blood, the colour, and how the dog is in itself, then decide whether it needs a vet today.

Body system · Urinary tract

Blood in my cat's urine — what now?

Blood in a cat's urine can be simple bladder inflammation, or the warning before a complete blockage. A male cat that cannot pass urine is an emergency; do not wait until morning.

Body system · Breathing and heart

My cat is breathing fast — what now?

Open-mouth breathing is never normal in a cat. Judge it by how much effort you can see, and count the breaths while the cat is completely still or asleep.

My dog is coughing — what now?

A cough is not a diagnosis. What matters is how much effort breathing takes, how hard the coughing fits are, and what else is happening at the same time.

My cat is sneezing — what now?

The occasional sneeze is harmless. Three things decide the answer: whether the discharge is clear or yellow-green, whether the eyes are affected too, and whether breathing has become an effort.

Body system · Skin and coat

Body system · Eyes, ears, mouth and nose

My cat has eye discharge — what now?

Eye discharge can be mild irritation, or a corneal ulcer, or raised pressure inside the eye. The key is whether the eye itself has gone cloudy or white, and whether the cat can open it.

My dog's ears smell — what now?

A smelly ear usually means inflammation or infection in the ear canal, not just dirt. Cleaning only reaches the surface; an infection needs a sample and the right medicine.

My dog has bad breath — what now?

Bad breath usually comes from periodontal disease, but it can also signal a mouth tumour, kidney disease or diabetes. Check the teeth and gums before buying dental chews.

Body system · Nervous system

Body system · Bones, joints and movement

My dog is limping — what now?

Lameness runs from a cut pad to a slipped disc. First check whether the dog can take weight on the leg, and whether it came on suddenly or has been building.

Body system · Whole body and metabolism

My cat will not eat — what now?

A cat that stops eating runs into trouble faster than a dog. Check first for breathing, urination or alertness problems, then decide whether to go now, contact your vet today, or record and watch.

My pet is lethargic — what now?

There is no single cause of low energy, but the lines are practical: can the pet stand, does it respond to food, and is breathing or urination also wrong.

My cat is not drinking — what now?

Cats drink little by nature and take most of their water from food. What matters is not how much left the bowl, but urine volume, gums and skin, and whether energy has dropped.

My senior cat is losing weight — what now?

Weight loss in an older cat is rarely just ageing. The three commonest causes are chronic kidney disease, hyperthyroidism and dental disease, and all three can be confirmed with blood tests and a mouth exam.

My cat is drinking a lot — what now?

A sudden rise in drinking is rarely good news: chronic kidney disease, diabetes and hyperthyroidism all look like this. Record a week first, then get blood tests.

My dog will not eat — what now?

A dog skipping the odd meal is common. No food at all for more than two days, or refusing food with vomiting, diarrhoea or low energy, needs handling today.

My dog is drinking a lot — what now?

A sudden rise in drinking can point to kidney disease, diabetes, an endocrine problem or a medicine. Record a week first, then get blood and urine tests.

This page cannot replace a vet's diagnosis. If you are unsure, contact your vet.