After figuring out that my bp won't take F/T at all, he took to live feeding like a champ. We're now two meals and shed into owning him/her and I'm questioning what size I'm feeding.

The first live meal was a "jumbo mouse" the pet store called it. I wasn't able to weigh it, so I don't know. The second meal was a rat pup, again wasn't able to weigh it.

I know for sure the snake is 25 inches long, but I don't have a scale to weigh it. What size rat should I feed it?