Original odd couple

All you need is a shared interest. In this case, "warm lamp."

"not the most exciting entertainment but I'll take it"

Not interested in each other's food at all, so that's a plus.

Cat thinks friendly rock is nice.

I guess if people look like their pets, then it follows that a person's pets should look like each other.

Rocco’s Modern Life

Cat looks pretty fascinated watching the tortoise eat :)