I double feed often, but only because I often can't get the right size rodent for my snake to begin with. For example my 7foot male is quite capable of eating 500g rats but I can't often get them so I'll give him 2 smaller rats - usually 2 x 150g or 3 weaners or something thereabouts the size is should have. I still can't come to terms with feed them other animals as yet
Have fed the odd guinea pig but rabbits and birds? Forget it
which is why I offer multiple rodents.
I am still learning how to feed mine without "power feeding" - learning that reptiles aren't like other animals that would starve if provided limited food once a week or fortnight. But I had a scare with my big boy after eating a rat and his gut swelled - turned out to be nothing serious - but still now I am much more careful with temperature and how much I feed them.
