Vomiting in Pets: When It's Nothing and When It's Tonight

Vomit or regurgitation?

Vomiting is active — heaving, drooling, abdominal effort. Regurgitation is passive: food simply comes back up, often tube-shaped, right after eating. They point to different problems, so tell your vet which you saw (video helps).

Probably fine

A single vomit in a bright, normal pet who ate grass or gobbled too fast usually needs only a few hours of rest, small sips of water, then a bland small meal. Watchful waiting is reasonable when everything else is normal.

Go to the vet

Repeated vomiting, blood or 'coffee grounds', a painful or swollen belly, lethargy, suspected toxin or object swallowing, puppies and kittens (they crash fast), diabetics and seniors, unproductive retching in large dogs (bloat!), or vomiting plus not eating for more than a day.

Cats get a special rule

'Cats just vomit' is a myth that delays diagnoses. Vomiting more than occasionally — even 'just hairballs' weekly — warrants a check; chronic vomiting in cats is often food sensitivity, thyroid, kidney or gut disease that treatment genuinely improves.