Authenticated (04/05/05) by Jo Knights Manager (Education) of the Australian Koala Foundation. http://www.savethekoala.com
Glossary
Marsupial: a diverse group of mammals characterised by their reproduction. The embryo is born 11-35 days after conception. The tiny neonate crawls into the marsupium (pouch) and attaches to a teat where it stays for a variable amount of time. They also differ from placental mammals in their dentition.
Nocturnal: active at night.
Vestigial: a characteristic, often reduced in form, with little or no contemporary use, but derived from one which was useful and well developed in an ancestral form.
Logan, M. (2001) Evidence for the occurrence of rumination-like behaviour, or myrecism, in the koala (Phascolarctos cinereus). Journal of Zoology, 255 (1): 83 - 87.