I had a couple of cats. I went on holiday, and left them at a cattery for a couple of weeks. The older one managed to open the cat-room door by pushing down on the handle, then ran up and down the long corridor until noticed by the cattery owner. Then the younger cat died, and I got a new younger cat. I went on holiday again, by which time the older cat's back legs were knackered and he couldn't jump up. But I warned the (different) cattery owner that he was an escape artist. This time, he taught the younger cat how to push down on the handle, and again they ended up running up and down the long corridor. Cats are escape artists.
