Mahone has discovered Marley receives treats during training. When ever I call Marley, Mahone runs faster to reach the treat. This also works when I call Mahone, Marley thinks he's going to receive a treat and she responds.
Yesterday I was working on "Leave it" and Mahone was sure he wanted the treat. As Mahone approached my hand, Marley pushed him out of the way. It was quite amusing, especially because they are the same size. Of course once Mahone realized the treat was a carrot he quickly lost interest.
Hmmm...Maybe old cats can learn new tricks