Spent or fresh hops cause malignant hyperthermia in dogs — a runaway body-temperature spike that can be fatal within hours.
Less documented, treat as toxic.
Unknown compound triggers uncontrolled hyperthermia.
Extreme panting, elevated temperature, restlessness — act fast.
Emergency vet immediately; cooling en route helps.
ASPCA Animal Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661 — 24/7, a fee may apply. Your own vet first when reachable.