He took a "large" fuzzy the other day, but it looked mighty small doing down, see below, and didnt leave much of a lump...
The prey item does not need to leave a lump

Feed a prey slightly smaller then the girst size (widest part of your BP's body) once a week and your BP will do just fine.

Pinky (hairless, eyes closed)
Fuzzy (hair, eyes still closed)
Hoppers
Weaned
Adult

Here is an idea of sizes http://www.rodentpro.com/catalog.asp...el=frozen_mice