I have a great dog. She's half Lab, half pit bull.

A good combination. Sure, she might bite off my leg, but she'll bring it back to me.

If you pick up a starving dog and make him prosperous,

 he will not bite you. This is the principal difference between a dog and a man.

He that lieth down with dogs, shall rise up with fleas.

I went to an exclusive kennel club.

It was very exclusive. There was a sign out front: "No Dogs Allowed."