Sugar gliders have an extremely unique dentition. 2(I 2 or 3/1 or 3 C 1/0 P 1 or 3/1 or 3 M 3 or 4/3 or 4). Their incisors are specialized for gouging the bark of trees, and are
closed rooted. These teeth should never be trimmed. They are nocturnal and as such have extremely large eyes. They have four
toes on the hind feet; an opposable first digit; and the first and second digits of hind feet are fused (syndactyl). Scent
glands (bald patches) are present on the forehead and upper chest in intact males. Newborns possess a continuous cartilaginous
arc in the shoulder girdle, which provides support for the newborn to climb into the pouch. These bones break down immediately
after birth. Females possess a prominent pouch; males have testes which are contained within a scrotal sac that is located
cranial to the penis. Gestation is 15-17 days, but the young don't emerge from pouch until 60-70d post-parturition. This is
a cause for confusion when discussing the age of a juvenile sugar glider.
Marsupials are naturally hypoglycemic, with normal resting blood glucose in wild animals ~50mg/dL.They are relatively glucose
intolerant. Metabolism is about ⅔ that of other mammals, and heart rate is about ½ the rate of comparably sized placental
mammals. Average body temperature around 90 F.
Hedgehogs have dorsal spines, but ventral fur. The spines of hedgehogs, unlike porcupines, are not easily removed from the
skin. In fact, in a healthy hedgehog, the spines are so firmly adherent that the entire animal can be picked up by the spines.
(NOT recommended!) Hedgehogs also have unique dentition: the dental formula is 2(I3/3 C1/1 PM 3-4/3-4 M3/3). The teeth lie
in an irregular pattern within the oral cavity and are used for biting through the exoskeleton of insects. They are insectivores
and omnivores, but insects represent an important part of their diet. They are good swimmers, climbers, and burrowers. Hedgehogs
have an unusual behavior in which they 'anoint' themselves with frothy saliva when introduced to a new substance. They reach
sexual maturity at 2 months, and gestation is 34-37 days. Male hedgehogs have prominent seminal vesicles which lie dorsal
to the bladder and are responsible for production of secretions. They also have paired Cowper's glands which lie adjacent
to the penis.
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