Jump′ing Mouse, a small field and forest-mouse of North America, having very long hind legs and capable of jumping eight to fifteen feet at a single bound. The body and head together are about three inches long, and the tail, while variable, is often five inches in length. The hind-legs and manner of using them always remind one of a kangaroo. In color it is reddish-brown above and white below. It feeds on seeds and grain, is nocturnal in its habits, and is only rarely seen in the daytime.
