I was sorting through my stables today when I noticed that I had a pet with a silly and normal wits gene that are both marked at 70 gp but for some reason silly is dominant over normal wits, even though they have the same gp.

http://beastkeeper.com/pet/66410 <- this is the guy

EDIT: Just found another gene that has its values screwed up. This time with faint-hearted and normal. Looks like it's time to formally go through my stable to see what else is screwed up.

http://beastkeeper.com/pet/62877 <-point in case

It's because they have degeneration. The gene power of "bad" genes increases when a pet is inbred :)

Ah, I see. I didn't realize that it messed with the GP values. I thought it just threw new, negative genes into the pool.