Great tip - I was wondering how my ferrets (getting some kits in a few weeks) will get on in the heat - especially as I'm now living down south (I never thought I'd miss those chilly northern summers - but I do! ).....
Will start saving the kids pop bottles ready for the arrival of our ferrets!
yes heat is killer of ferrets of all ages, even if the cages arnt in full sun, classic signs are panting, layed out & generally letargic.
You need to act fast , cool the ferret as there brains literally cook