More: Jak's middle name is "JUMP". He's also known as Jak-Rabbit, Jak-Jak, Black-Jak, Jumpin' Jak, Cracker Jak, and Crazy Dog! He rescued us and I think the feeling is mutual. Never has a dog tried as hard to please. We're thankful to the Labrador Rescue of Greater Richmond for introducing this boy into our lives. He ROCKS!