There are people who translate arneves as the llama and state that just like the camel it is not kosher because it chews its cud but does not have spolit hooves as I explain at Are Llamas Kosher?
However, following those who translate arneves as "rabbit" we get:
You have it backwards. The animal translated as "rabbit" (arneves) is
ma-alei geira but has no split hooves. The rabbit does not have multiple stomachs and is not a ruminant, but it does "rechew" its food. Thus it is "Maalei Geirah" (which is a kosher sign) but does not have split hooves - which is why it is not kosher. An interesting point is that many people did not know this until it was published in Watership Down in 1978 or so.
DO RABBITS CHEW THE CUD? Leonard R. Brand Chairman, Department of Biology Loma Linda University
Some herbivorous animals consume part of their own feces, thus
recovering fermentation products that have passed through the
digestive tract. This process of reingestion of feces occurs in many
rodents (Thacker and Brandt 1955) and in all genera of hares and
rabbits (Carles 1977; Hamilton 1955; Kirkpatrick 1956; Lechleitner
1957; McBee 1971; Myers 1955; Southern 1940; Watson 1954; Watson and
Taylor 1955). Reingestion of feces is an especially well-developed
practice in Lagomorphs (rabbits and hares) and is important for their