Hesperonychus elizabethae

No, no relation to me. This was supposedly a dinosaur, the smallest known one in North America. Based on the picture, it sort of resembles a ferret.

Article: Nicholas R. Longrich and Philip J. Currie, "A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America," PNAS, March 16 advanced online edition