hey, for some people that's a difficult thing to judge!

Besides, if I were to stick to that, I'd be feeding medium/large rats to my adults, and I KNOW that's not what most successful breeders do.
This is why when people ask I tell them to feed a prey slightly smaller than the girth size (widest part of the BP's body) and nothing ever larger than a small rat (4 weeks old - 45/65 grams)