Copycat or creative mind?

Up to now, Tucker is the only dog we've had who likes to sit on one step and put his feet on the next one down. We refer to this as the Tuckersit, and Steve thinks Tucker finds it restful.

The Tuckersit, in practice

But now Dionne has come up with her own version. She maintains this pose in my office for minutes at a time. 

 

Is she copying Tucker?  Is this a creative innovation? I have no idea, but it is eye-catching!