No kidding, animals form bonds with each other!
We had to split the family up for Feb. and Mar. this year. I got Beena (the kid) and Crush (the cat). G-Man got Lady (the dog). Whenever we got together for the weekend, Crush and Lady would check each other out to make sure the other was ok and then they'd curl up together for a snooze. On Mondays (when G-Man and Lady left for the week) I'd come home after work to Crush, who was loudly demanding to know where his dog was.