Re: Which animals have split hoofs completely divided and chew the cud.

As best as I could find, there are 10 animals that meet the dual requirements of split hooves completely divided
and chew their cud (which happens to coincide with Kosher requirements for mammals). These are:

cows/beef (Bos taurus), sheep/lamb (Ovis aries), goats (Capra hircus),  deer/ venison(cervidae), 
the pronghorn (Antilocapra americana), moose (Alces alces), the 6-foot, 1500 pound Giant Eland (Taurotragus
derbianus), giraffe (giraffa cameloparbalis),  the Bongo (Boocerus eurycerus), and possibly the buffalo.
Please see these sites for more information:

http://www.kashrut.com/articles/buffalo/
 
http://www.bpe.com/food/single-articles/whats_kosher.htm