Sugar Glider Anatomy
Sugar
Gliders are exquisitely evolved for free-ranging life in the rain forest
of Australia (mostly in Tasmania). They have very unique physical
characteristics that need to be taken into consideration when making
choices for housing, feeding. The skeleton picture below shows how
small and delicate the bones are, and this should also be taken into
consideration when handling them.

  
BOY
or GIRL
Sugar Glider
The
male
and female
are pretty easy to tell apart at a glance from the upper or under side.
The male has a slightly larger body, and slightly larger head. On
the upper side, the most prominent difference is that the male has a
bald spot on his head and the female does not.
Rocky is
male & Natasha is
female


MALE
Sugar Glider
From the under side, the
male has a small slit near his throat that is usually surrounded in a
light orange/yellow color on the fur. This is where he has a scent
gland that he uses to mark his territory as well as his mate. The bald
spot on the head of the male is also a scent gland.
Below are some photographs of a
Sugar Glider penis and testicles. The penis is considered to be bifurcated.
Click on the photographs below for a larger view.


FEMALE
Sugar Glider

From the under side, the
female has a small opening in the lower stomach area which is her
pouch. Within the pouch she has 4 nipples for her young to attach to.
This little girl has a baby joey in her pouch which is real obvious
because of the bump on one side. The patagium is a membrane that
is along their sides and goes from the front paws to the back paws.
This piece of membrane stretches out for them to glide and allows for
them to maneuver by way of loosening and tightening it as well as using
their tail as a rudder. Gliders have been known to glide up to 160
ft in the wild.

Here is a view of the
underside of the female's tail. Instead of there being three
separate openings for excretion and reproduction, sugar gliders have
only two openings. One is the Uro-Genital area and the other is the
Rectum.
  
Sugar Glider Teeth

Sugar gliders have fixed teeth, incisors, molars, and premolars. These
teeth do not continue to grow and are not replaced if lost. Sugar
glider teeth should be firmly anchored within the gingiva (gum). Sugar
Glider teeth need something to chew and gnaw on. However, unlike
hamsters and bunnies, Sugar Gliders will not chew on anything artificial
because they prefer real branches. The best branches to use are wild
apple, eucalyptus and sassafras, and oak is ok too.
DO NOT USE ANYTHING THAT COULD HAVE PESTICIDES.
Sugar
Gliders chew the bark off of trees in the wild searching for insects and
sap/manna and this prevents dental decay and is beneficial to the
overall health of their teeth. They really enjoy chewing on the
branches and it gives them something to do when you are away.
Sugar gliders should not have their teeth trimmed, and the molars or
premolars should not be dremmeled. Normal chewing of recommended
dietary foods is good enough to keep their teeth clean and healthy.
Should a tooth fracture or a deep root abscess occur, an extraction
and/or antibiotics might be necessary. Gingiva should not be
bright red where the teeth and gum line meet because this may indicate
an infection.
  
Sugar Glider Eyes
Sugar gliders have large rounded eyes that are placed on
the sides of their head so that they have a larger field of vision.
Their vision is extraordinary! They can glide up to 160 feet from tree
to tree at night and catch a moth in flight just for a snack! In the
wild, being nocturnal gives them a large margin of safety. Under
the cover of darkness, most predatory birds and reptiles would be
asleep. It's also a time when the worms come to the surface with
the cooler night temperature, and the bugs come out. This provides
them with food that is not available during the day. Another
advantage of being nocturnal, is that by not having to deal with the
extremely hot temperatures of a typical Australian day, it reduces their
need to conserve water.
EYESHINE
This is a term for a phenomenon that
haunts photographers, yet helps to easily spot a nocturnal animal in the
dark. Many nocturnal animals have eyes that are adapted to low
light and this makes it easier to find them with a spotlight at night.
Light goes through the retina when it enters and part of this light is
absorbed, while some of it is lost in the background tissues of the
eyes. Many nocturnal animals have "tapetum" which is a mirror-like
membrane behind the retina. This reflects light back through the
retina when light hits it. This is what is called "red eye" in
photographs of humans, and is many other colors depending on the animal.
A sugar glider tends to have a " blue" colored eyeshine.

The
nocturnal animal's eyes are mostly made of Rod cells. These
contain a sensitive chemical, Rhodopsin, which breaks down when
electrical impulse transmissions to the brain as light reaches it.
The Rhodopsin is restored instantly by using Vitamin A so the vision is
continuous. Large Rod cells have more Rhodopsin, but fewer can be
in a given area. This means there is a significant reduction in
visual details.
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