Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.
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My cat licked some used hops from my home brewing kit, is that dangerous?

Cats · Food safety

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

Short answer

Yes, this is an emergency. Hops are toxic to cats and can cause a dangerous, rapid rise in body temperature called malignant hyperthermia. Do not wait for symptoms to appear. Contact the ASPCA Animal Poison Control Center at (888) 426-4435 or take your cat to a vet immediately.

Hops (used hops) — Food safety facts

Do not feed · Cats · full breakdown on the linked food page

Toxic — can trigger malignant hyperthermia (rapid, fatal rise in body temperature). Emergency if eaten.

Open the full food page: Hops (used hops) food facts →

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