Heat Exhaustion and Heat Stroke
Heatstroke is a very serious condition in rabbits, but can be prevented. Always consult your rabbit-savvy vet when in doubt.
If your rabbit does get too hot it is at risk of developing heatstroke. Temperature, humidity and ventilation are all factors that contribute to heatstroke in a rabbit. Be vigilant and check your rabbit regularly throughout the day for signs of heat exhaustion. Early detection and proper corrective steps could mean the difference between life and death for your rabbit. Watch your rabbit for panting or lethargy or feeling very warm to the touch.
Note - If you have a suitable thermometer, the best way to tell if your rabbit is overheated is to take its temperature. The normal rectal temperature of a rabbit is 38.3°c to 39.4°c. There is information on how to do that here -
Signs to look out for include:
Fast, shallow breathing
Hot ears
Listlessness
Wetness around the nose area
Tossing back of head while breathing rapidly from open mouth.
If you suspect your rabbit has eat exhaustion:
*Relocate your rabbit to a cool place away from any sun.
*DO NOT submerge him in cold water - This could place the rabbit in shock.
*Dampen his ears and body with cool (NOT cold) water. This will help to bring down his/her body temperature.
*Offer plenty of fresh, cold water.
then
GET HIM TO YOUR VETERINARIAN OR EMERGENCY CLINIC IMMEDIATELY. DO NOT WAIT!