I have never really weighed the pups. I could do that, but I have run out. When he doesn't eat them I can't put them back into the colony because they are based on sent. So they smell the snake on them and kill them. I've even tried to reintroduce the pups slowly by keeping them in a critter cage full of there feces but no go. If I had to guess I would say maybe 25-35 grams, which is why I want to get him off. I was told when he does finally eat he will eat 4-5 of them and thats pretty much the whole litter so you never really regenerate what he eats/doesn't.