My daughters left their guinea pigs outside Monday. They were in deep shade with a breeze, but temps were 95, more or less. My son and youngest daughter went to get them later, and found the older one unconcious! They looked up what to do on the internet and wrapped him in a cold towel to treat him for heat stroke. But then they laid him on the basement floor, and the A/C was on. A little too cool....then he got hypothermia! We ended up taking him to the vet, and paid $215.00 for subcut fluids, the ER visit and overnight stay under a heat lamp. plus antibiotics and supplements. Just a warning for those who don't know...some piggies can't stand heat! (The other one was fine). Our GP is still not normal...very tired most of the time and just sleeps, although he is eating some, especially goodies, and drinking. And responds to petting. Has anyone else had any experiences with heat stroke in animals?