Ok here my pet theory. The less you visit your pets, the less they eat, the less they eat, the less it costs you to feed them, the less it costs you the better because those darn things are ABSOLUTE PIGS!
I see why Habbo created them! Its people like me who take pitty on little virtual pixels that eat and dring and play with ball. Im one of those people who cant let there little virtual pets stave so I have to feed them. I have a cat and a dog and there in my good room so I go in there quite often and everytime I go in there they eat 2 fish or 2 bone piles! Thats EVERYDAY! But on .ca I have a cat and a dog too and I dont get on there much to see them but they have eaten like 5 piles of bones MAX! Since the 80+ days I have had them! So put your pets in an room where you dont frequent too often and it will save you some credits