snowshoe hare

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A medium-sized hare (Lepus americanus) of northern North America, having large, heavily furred feet and fur that is white in winter and brown in summer. Also called snowshoe rabbit, varying hare.

Wiktionary

1. n. a North American hare, Lepus americanus, that has large, furry feet; its fur is white in winter and brown in summer

WordNet 3.0

1. n. large large-footed North American hare; white in winter