Adam Clarke on Leviticus 11:6

The hare - ארנבת arnebeth, as Bochart and others suppose, from ארה arah, to crop, and ניב nib, the produce of the ground, these animals being remarkable for destroying the fruits of the earth. That they are notorious for destroying the tender blade of the young corn, is well known. It is very likely that different species of these animals are included under the general terms שפן shaphan, and ארנבת arnebeth, for some travelers have observed that there are four or five sorts of these animals, which are used for food in the present day in those countries. See Harmer, vol. iii., p. 331, edit. 1808. Some think the mountain rat, marmot, squirrel, and hedgehog, may be intended under the word shaphan.