What to Do When Your Dog Is Both Vomiting and Having Diarrhea

1 Common Causes

A delicate gut is easily irritated into vomiting and diarrhea. For a mild case, a vet-recommended digestive aid plus easy-to-digest bland food helps; for a more serious loose stool and vomit, an anti-diarrheal kept on hand works — always follow veterinary guidance and keep the diet light and balanced during treatment.

Colds are another common trigger, especially at season change: in summer a dog belly-down on the floor chills easily, and in winter moving from warm indoors to cold outdoors does the same. A dog-specific cold medicine plus extra warmth (even a shirt if it tolerates one) is the fix. Irregular feeding — greasy, salty human food or too many mixed items — also causes it, so drop table scraps and hard-to-digest food. Frequent kibble switches upset the gut too; transition slowly by mixing old and new.

2 Rule Out Infectious Viruses

Causes vary, but if the dog is unvaccinated and the vomiting-diarrhea is severe, have a vet rule out parvovirus, distemper, or coronavirus.

3 Fasting and Rehydration

First withhold food and water. Water entering the gut now stimulates motility and floods digestive juices, worsening the vomiting. Fast 8–12 hours; once the dog goes that span without vomiting, offer a little water.

4 Daily Prevention

Train a reliable ‘leave it’ so the dog ignores roadside and strangers’ food — this daily habit prevents many gut troubles and protects the dog’s life.