We've been experimenting with rat heat exposure as well as it's been 100-105 in the afternoons here. Our rats are in the garage where it's not 100...but I'm guessing it's in the high 90's. Anywho, we have three fans blowing on them right and I fill their water bottles twice a day...

They look hot, but seem okay.

I have one mouse nursing a litter and she's inside. =)