Gremlin

Billy lund through the father of an antique shop, take a fancy to a clever Gremlin, want to send to Billy as a Christmas present, shopkeepers man insists not to sell, but the old man's grandson secretly to sell the elf to lund, a series of unhappy things.
The Mogwais are a race of small, furry, rodent-like creatures, koala-like creatures and somtimes primate-like creatures with big ears and three stubby fingers and toes. Their fur color usually is the color of the mogwai that it spawns from. For example, in the first movie, when Gizmo got wet, the Mogwai are brown and white, but there is a chance that they can have other fur colors as well, such as black or even orange. Sometimes they even have certain peculiar features, like small mohawks or different shaped ears. It's usually seen that the leader of the Mogwai is the one with the mohawk. The leader has few more features then the others, for instance, not only do they possess a mohawk for a hairstyle, but they are also the only ones with fangs and are by far the smartest of the group. It was also heard in the commentary of the first film that they could roll into balls, although it's never seen. If watched closely you can see if you push a Mogwai too far it will seek its revenge, for example, Gizmo and Stripe, Earl and Roy, and Gizmo and Mohawk. more: http://gremlins.wikia.com/wiki/Mogwai