A sphincter muscle that is part of a pouch. The pouch sphincter serves to keep the young from falling out. [ http://en.wikipedia.org/wiki/Koala#Description ]
This is just here as a test because I lose it
A sphincter muscle that is part of a pouch. The pouch sphincter serves to keep the young from falling out. [ http://en.wikipedia.org/wiki/Koala#Description ]