There was a terrific National Geographic story a few years back about animal play. The writer reported being holed up somewhere in the Arctic with his Husky dog tied up outside. A polar bear came racing up and the reporter thought the dog was dead meat. Turned out the polar bear just wanted to play and returned to do so on subsequent days. It looks to me in this case that the Husky actually wanted to play, though I suppose that does not fit with our new icon.