Leviticus 11:23

20 Every winged four-footed thing which goes on the earth is disgusting to you;

21 But of the winged four-footed things, those which have long legs for jumping on the earth you may have for food;

22 Such as all the different sorts of locust.

23 But all other winged four-footed things which go on the earth are disgusting to you.

24 By these you will be made unclean; anyone touching their dead bodies will be unclean till evening:

25 Whoever takes away the dead body of one of them is to have his clothing washed, and will be unclean till evening.

26 Every beast, in the horn of whose foot there is not a complete division, and whose food does not come back, is unclean to you: anyone touching one of these will be unclean.