The pygmy marmoset is the tiniest of the marmosets, as well as the tiniest of monkeys. It measures 4.6–6.2 inches (12–16 centimetres) in length and weighs 3–5 ounces (85 to 140 grams). Its tail measures 6.8 to 9 inches in length (17 to 23 cm)
To evade predators, Pygmy marmosets can twist their heads 180 degrees.
Pygmy marmosets are quiet, non-aggressive animals in general. However, they can be hostile against other pygmy marmosets, especially during breeding season when partners are in short supply. Pygmy marmosets spend much of their time hiding since they are prey to so many predators.
The gestation span of a mother pygmy marmoset is about 4.5 months, and she can give birth every 5 to 7 months. Although she generally always has two offspring, pygmy marmosets have been known to have three or even four babies in a single litter in zoos.
Marmosets are omnivores, meaning they consume a wide range of foods. Insects, fruit, tree sap, and other small animals make up their food. Pygmy marmosets are attracted to tree sap. They use their teeth to cut holes in the bark of trees to get at the sap, and they can make thousands of holes in a small number of trees.
The pygmy marmoset is divided into two species: Western pygmy marmoset (Cebuella pygmaea). Eastern pygmy marmoset (Cebuella niveiventris).
Male marmosets are frequently the primary carers for their young and remain devoted to their family. Even when lured by a sexually mature female, they refuse to leave. Monogamy is the norm for marmosets.
Pygmy marmosets live in groups of up to nine monkeys called troops, with an average of five individuals. The group usually consists of a breeding pair, their offspring, and any adult children.
The average lifespan of pygmy marmoset is 12 year
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