A volunteer at the Toledo Zoo had her thumb ripped off when an orangutan reached through an enclosure and bit her arm. The zoo authorities were unclear exactly how her thumb became detached, but she was treated for non-life threatening injuries.

Zoo officials say that the volunteer was not in an area that is ever open to the public and "say all its great apes attempt to sneak their fingers through to grab things and that it's a known behavior staff must watch for while they're near the enclosure", according to WIVB.