We have an American Staffordshire Terrior. Looks like a pitbull, barks like you would think a pitbull would bark, but not classified as a pitbull.
I say to Riley on the regular, "Riley, leave the kitties alone". Then 10 minutes later he and 2 of the cats are asleep on our bed. He just turned 3 so in essence, he's a curious toddler. We wouldn't trade him for anything!