An adult sugar glider is approximately 11 inches long from his nose to the tip of his tail, but most of that (6 or 7 inches) is tail. In shape and size they are very similar to our American flying squirrel.
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Colors in the wild can vary, with the white areas ranging from white to cream to yellow, the grey areas from grey to brownish grey or tan, and the stripes from black to chocolate brown. Some have white-tipped tails. New colors are emerging in captivity, including albinos, black-eyed whites, blonde and platinum, and various mottled color combinations. There are photographs of some of the color variations on Sandman's website.
The ears are hairless and on the largish side, and turn toward sounds like a cat's ears. Their eyes are very large, as you would expect in a nocturnal animal, and black.
Their face is much pointier than that of a flying squirrel. The pointy face, combined with the ears and the big eyes, gives them a look that is somewhat reminiscent of a bat. (A very cute bat.)
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The glider's tail is weakly prehensile and is sometimes used for carrying twigs or leaves to their nests. Babies also wrap their tails tightly around their mother's tail or leg to help help them hang on while Mom leaps around.
The tail is very long, so it can be used as a rudder and for balance as they glide from tree to tree. Their hands and feet are very deft and capable and they use them as well as any monkey. Their hands are shaped much like our own, with four fingers and an opposing thumb. The feet have four toes and a nailless "thumb". The first two toes almost look like one toe split down the middle, and all the fingers and toes have little pads on their undersides.
The tail is very long, so it can be used as a rudder and for balance as they glide from tree to tree. Their hands and feet are very deft and capable and they use them as well as any monkey. Their hands are shaped much like our own, with four fingers and an opposing thumb. The feet have four toes and a nailless "thumb". The first two toes almost look like one toe split down the middle, and all the fingers and toes have little pads on their undersides.
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An anatomical odditiy they share with opossums is the bifurcated penis -- there are actually two shafts. Normally they are retracted, but they often show when the male is afraid or excited. The female's anatomy is also similarly divided, and can support two simultaneous pregnancies, holding one in a sort of stasis while the other is developing.
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