You know how terriers often run using only one back leg to post themselves along? I was watching one of my charges do this earlier and realised it was always her left that she was not bothering with. I checked for injuries just in case, but she was fine, so I think it must be a habit with her, but it made me think, are dogs left or rightlegged like we're handed? If you've got a terrier or terrier type who does this do they use both legs equally or one for preference, if so which one?