Catahoulas are AWESOME dogs! I adore them and hope to have one someday. I think they are the most stunning of all the herding breeds here's more about them.

http://www.dogbreedinfo.com/catahoula.htm

this is the catahoula cur but I think it's pretty much the same breed although the catahoula curs are more stocky like a great dane - catahoulas are usually the size of an aussie or a border collie
http://en.wikipedia.org/wiki/Catahoula_Leopard_Dog

http://www.terrificpets.com/dog_bree...eopard_Dog.asp