Debate has arisen among primatologists concerning the proper genus in which to place the pygmy marmoset. An … See more

Pygmy marmosets are the smallest true monkey, with a head-body length ranging from 117 to 152 mm (4.6 to 6.0 in) and a tail of 172 to 229 mm (6.8 to 9.0 in). The average adult body weight is just over 100 g (3.5 oz) … See more

Pygmy marmosets can be found in much of the western Amazon Basin, in Brazil, Colombia, Ecuador, Peru, and Bolivia. The western pygmy marmoset, C. pygmaea, occurs in the state of Amazonas, Brazil, eastern Per… See more

A pygmy marmoset group, ranging from two to nine members, contains one or two adult males and one or two adult females, including a single breeding female and her offspring. Interbirth interval ranges from 149–746 da… See more

Both species of pygmy marmosets are listed as vulnerable on the IUCN Red List of Threatened Species. They are threatened by habitat loss in some areas of their range, and by the pet trade in others (i.e. Ecuador). Interaction … See more