Do either of these exist for actors? I haven't been able to find anything regarding them by searching.

Instead of, say, checking whether an actor is an animal or not by calling GetRace(), I want to be able to give them a specific keyword and check for that.

http://www.creationkit.com/HasKeyword_-_ObjectReference and SKSE's http://www.creationkit.com/HasKeywordString_-_Form will both do it.