What Breed Is My Dog?

My husband and I adopted this dog from a rescue, she is so sweet and very loving. We were told she was a Bassett Hound mix which I didn't think was true. So now I'd like to get some opinions what she may be. I've been told part bully Pit Bull and maybe Rottie. She's a doll, but she is chewing my chain link fence and digging under it like crazy. She caught a bird and a rabbit already and escapes the yard constantly, but does not go anywhere just the other side of the fence. I will take her to the vet for a DNA test soon, but am just intrested in others' thoughts.