Cat Door Stop???? or what is it... help!!

I was wondering CAN ANYONE HELP tell me WHAT THIS IS?
My grandmother had this ugly cat forever, and she had said that it was a tree hanging cat, but I thought that it was TOO HEAVY for a tree.. so I assumed it was a door stop.. Its heavy, and looks like there is bronze underneath.. I was just hoping that someone can direct me in the right way to find out what this is and how much it is worth if anything...