I don't either, but he can be pretty mean sometimes. He and my aunt's cocker go at it bad. Both males and about the same size, guess it's a dominance issue
lol pits are not mean dogs lol going at it like that is simply a terrier thing in general. my extremly smart and well bahaved Jack, if she gets into a fight the only way you will be breaking that apart is by kicking her in the ribs just hard enugh to wind her so she has to let go and you can jump in lol thankfully she is a sensable dog and rarly gets into a fight, because she actually causes injurys!