Not to sound harsh by no means so don't take it that way, BG gave great advice and to add , it's not about what we're really fond of it's what is best for the animal. It really pays to take the time to do research. Sweater box ( 32 qt'ish ) for adults roughly upto 2000 grams 41 qt for 2000 grams depending on the size/age of the animals.