How much does a snow leopard eat in one day?

A leopard will eat as much as than animal can eat in one go, as does most carnivores. But, being vulnerable to having lions and hyenas driving the leopard off the kill, leopard's quite sensibly are able (and indeed capable) of carrying their kill up into the branches of a tree. Indeed, the leopard may carry their kill into the tree branches before eating - it depends on how many lions and hyenas are in the area.