We got my dog's DNA tested- we just had to swab his cheek and send it to the company. We got him from a rescue who thought he was probably a mix between a Beagle and a Jack Russell. The DNA results, however, said that he was a purebred Jack Russell! This surprises me because all of the Jack Russells I've seen were really small, and he's around 27-30 pounds! Has anyone ever seen a Jack Russell that big?