Guinea pigs overheat easily and heatstroke can kill fast. Simple ways to keep them safe when it is hot.
Guinea pigs cope far better with cool than with heat, and heatstroke can kill quickly. Above about 26C (80F) you need to act, and their spot should never be in direct sun.
Panting, drooling, lying flat and lethargic, or unresponsive. Cool them gradually with a damp, cool (not cold) cloth on the feet and ears, and get to a vet immediately. Never plunge an overheated pig into cold water.
Last updated August 2026 · Written from years of keeping long-haired guinea pigs in the Houston area. This is general care information, not veterinary advice. For anything medical, please see an exotic vet.