We often talk about how intelligent we humans are and how playing and playtime help make us human. But it was the animals that learned to play long before man ever showed them how. Either wild or tame, animals like to play. Little Lucy loves to play with string and the laser toy, but when given something like the mouse (above) she was completely indifferent. Then we gave her this toy mouse (picked up at a Walmart for $3), and Lucy has taken to it the way our Labs take to their toys. And it's not due to some additive, like catnip. I've seen the cats react around catnip, and this wasn't one of those reactions.
Once again I'm reminded how our animals have many human-like characteristics, such as playing. Along with problem-solving and basic emotions. Cats in particular are fascinating to me.