Koala

Koalas are sexually dimorphic as males are larger and 50% heavier than females and have broader faces, smaller ears, and a large chest gland rather than a pouch.

Koalas exhibit sexual dimorphism with the males being larger. Males are up to 50% heavier than females, have a broader face, somewhat smaller ears, and a large chest gland.

Female koalas have two mammae; and rather than a chest gland, have a pouch that opens to the rear and extends upward and forward.

In the south, males have an average head-body length of 78 centimeters and an average weight of 11.8 kilograms, while females have an average head-body length of 72 centimeters and an average weight of 7.9 kilograms. In the north, males average 6.5 kilograms and females 5.1 kilograms.


Image | ©️ Adrian Midgley, Some Rights Reserved, (CC BY-NC-ND 2.0)
Sources | (Dubuc & Eckroad, 1999; MacDonald, 1995; Nowak, 1999)

 

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