[BEAR.]

okapi - outsiders only.
donkey - not common in the united states, so i'd put it as outsiders only.
mistletoe - eastern mistletoe is native to the united states (and can be found in maine) so i think it'd be okay for all the clans.
horse - is fine.
reindeer aren't that common in the united states now (given many of them were hunted to near extinction) so i'm leaning towards no unless they were an outsider.