my mare recently founderd, not a donkey a mini, but if there hoofs are hot then i think they might be foudnering, uh my mares hoofs were hot, and she was laying down, now foundering is when they have apin in there hoofs and thats y its hot, its like a feveer, but i cought chinas early and i was able to help her, foundering can trun really bad, they can even die if it gets bad enough, call ure vet or farrier, and get ure donkey or mini checked out, if there hoofs are hot, even if its only two of them, cold hose them 4 times a day for ten mins, that what i did and it went away in a week, keep ures off grain, and off ggras, i duno if ure donkey is for sure, but yes call ure vet or farrier if ure worried!!!