With Ball Pythons prey Should be 10-15% Body mass so 300g will be able to Eat 40g weaned ray without problem or 2 20g pups... keep feeding the rats... Mouser are big pain In the but Especially when You need to feed adult ball with Multiple (3,4,5) retired breeders
OOOh, I didn't know they could do up to 15%. I thought like 10 was the limit. Good to know.