What animals that have horns are kosher?

Any animal that has split (cloven) hooves and chews their cud may be slaughtered and processed in accordance with kosher requirements. Examples of kosher animals that have horns are cows, bison, sheep, and goats.

However, the following from Kashrut.com is interesting:

"Finally, the Mishna (Niddah 51b), at least according to Rashi's understanding, states that horns alone are enough to declare an animal kosher, since all horned animals are kosher"