Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My dog ate a piece of old, mouldy guava from the kitchen counter. Is it safe?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

It's not an emergency, but mouldy fruit can cause stomach upset. Watch your dog for vomiting, diarrhea, or a loss of appetite over the next 24 hours. Offer fresh water and bland food if they seem fine, but call your own vet if you notice any worrying signs.

Guava — Food safety facts

Safe to share · Dogs · full breakdown on the linked food page

Ripe flesh is safe in small amounts. The hard seeds can upset a sensitive stomach.

The full verdict, portion guidance and serving notes are collected on the Guava food facts page.

Open the full food page: Guava food facts →