Did you see the late breaking story about the golden retriever nursing tiger cubs at a game park in Kansas? It's here if you haven't. Ahhh.
Dogs step in a lot to be foster mommies. A year ago in Tunisia, two tiger cubs got a nice pit bull to love and feed them. Then there were those cubs in Yugoslavia whose mother tried to eat them, but a police dog stepped in. And the older dog in Hefei China in 2005 -- you guessed it, 2 cubbies.
I could go on, but that's a lot right there. Dogs are built to love and be loved.