Nothing is overtly disturbing, there is no violence or graphic anything, but there are a few odd background moments: A character attempts to hang himself, but is stopped at the last minute. A lot of characters end up depressed and inebriated. Younger viewers may fear for the main characters bunny in a couple of scenes.
This is not meant for younger kids due to themes and ideas that younger children may not fully comprehend. Don't let the PG/U classification fool you.