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Monkeys have open cheek pouches within the oral cavity, but they open out in some rodents of America. Hence the name "diplostomes" is associated with them, which means "two mouths." In some rodents, such as hamsters , the cheek pouches are remarkably developed; they form two bags ranging from the mouth to the front of the shoulders.
Gestation has been known to last up to 21 days, but this is rare and almost always results in complications. They can produce large litters of 20 or more young, although the average litter size is between eight and 10 pups. If a mother hamster is inexperienced or feels threatened, she may abandon or eat her pups. A female hamster enters estrus ...
Many marsupials have a permanent bag, whereas in others the pouch develops during gestation, as with the shrew opossum, where the young are hidden only by skin folds or in the fur of the mother. The arrangement of the pouch is variable to allow the offspring to receive maximum protection.
kangaroos: a large male can be 2 m (6 ft 7 in) tall and weigh 90 kg (200 lb). Kangaroos have large, powerful hind legs, large feet adapted for leaping, a long muscular tail for balance, and a small head. Like most marsupials, female kangaroos have a pouch called a marsupium in which joeys complete postnatal development.
Although invisible to us, some animals are able to sense it. In addition to the platypus and other monotremes, sharks, rays, bees, some fish, and dolphins can also detect electric fields.
They have large pouches in their cheeks where they carry extra food. They are considered highly intelligent and are often used in the medical field for experimentation due to their remarkable similarity to humans in emotional and cognitive development.
Females have been said to be capable of producing up to 10 litters yearly. Gestation is 27–36 days. The animals generally have between six and eight nipples. One to five young are born at a time. The animals are nocturnal omnivores, and feed on vegetation and small animals, especially insects. They have a particular taste for palm nuts.
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