Other animals that can be used as Livestock Guardian Animals are donkeys and llamas.
We have had miniature donkeys as well as alpacas. Each are a smaller version of the aforementioned guardian animals above.
Something to keep in mind, which was a consideration for us, is the feed and diet of each animal you employ. The donkeys and llamas and alpacas all eat hay. The mineral requirements of thee animals vary slightly to what is allowable for sheep however. Sheep cannot have copper, so they get a copper-free mineral.
When we housed the mini donkeys in the barn, they started eating the posts. To deter them, we put hot sauce on the posts. They ate them even quicker!
Turns out donkeys - well these 2 anyway, had a taste for things spicy!