What's The Difference Between Rabbits And Hares?

Hares and rabbits look similar, and some may hop to the conclusion that they're the same animal. Hares and rabbits are in the same family, Leporidae, but they're different species, like sheep and goats are different species.
A hare's pregnancy lasts 42 days, compared with rabbits' 30-31 days. Newborn hares, called leverets, are fully developed at birth - furred with open eyes - while newborn rabbits, called kittens or kits, are born undeveloped, with closed eyes, no fur, and an inability to regulate their own temperature.