Quote Originally Posted by frankykeno View Post
Males that have to mate repeatedly and with numerous females in rapid succession tend to have these sorts of best bits.

That's how I pick my future male breeders (ASF's or regular rats) by seeing how's got the biggest butt pillows at the youngest age.
I'll keep that in mind for the future if everything goes well with my ASFs. Everyday I learn something new here.

But still funny to me in a way!