This has got to be my cat's favorite kind of toy, besides the feathers on a bungee cord tied to a stick and the laser light. He will stay busy hours at a time chasing these little battery operated plastic bugs all over the house. When it's time for a scenery change, he picks them up in his mouth and gentle sets them down in the next room. In that room he continues to chase the little bugs around. It's very cute, but do be prepared to go through multiple packs of LR44 small round batteries. And hope for good luck with the ity bit screws you must remove to open the battery doors. You will learn to have high amounts of patience.