Page "Unclean animals" Paragraph 7

Other mammals forbidden by the Torah are " crawling creatures ", such as mice, and flying bats.

According to the Torah, mammals that both chew their cud ( ruminate ) and have cloven hooves, such as cattle, goats and sheep, are kosher ; while those that have only one of the two characteristics are impure and cannot be consumed.

Leviticus cites explicitly the camel, because it ruminates but does not have a cloven hoof ; the hyrax and the hare are excluded on the same grounds.

It also explicitly declares the pig unclean, because it has cloven hooves but does not ruminate.