After feeding one adult mouse do you notice a lump in their stomach? Even if its a little lump. After feeding mine one adult mouse I dont see any lumps so I started to feed 2 adults. I dont like feeding 2 adult mice so I think I may go with rat pups or weined rats.

I read something on the internet about a good method to determan how big.

*Take a peice of string and rap it around the largest part of your snake to get the gurth of it then when choosing a mouse/rat you take the piece of string and wrap it around them. The hair on them can fool you if your a biginner. Well it did for me.