Kera Monkey Skull measures 3.9 inches. Kera Monkey Skull is museum quality polyurethane resin cast. Known as Crab Eating Macaque Monkey

In Indonesia and Malaysia, the Kera Monkey or Crab-eating macaque and other macaque species are known generically as Kera, possibly because of their high-pitched cries

Kera Monkey or Crab Eating Macaques are found in southeast Asia from Burma to the Philippines and southward through Indochina, Malaysia, and Indonesia. They are found as far east as the Timor Islands.

Kera Monkey or Crab Eating Macaques ecologically diverse. Some of the habitats in which they have been found are primary forests, disturbed and secondary forests, and riverine and coastal forests of nipa palm and mangrove.

Long-tailed macaques live most successfully in disturbed habitats and on the periphery of forests.

This species has been observed drinking much water and eating crabs, they often live near bodies of water. Of the various habitats occupied by long-tailed macaques, the swamp forests seem to have the highest density of them.

In recent years, habitat alteration has expanded the range of some populations Kera Monkey or Crab Eating Macaques. In Malaysia, cleared land, such as plantation areas, has been colonized by this species.

It has been observed that some disturbed habitats have higher troop and population sizes than some pristine forests.

The Kera monkey or Crab Eating Macaques has the highest degree of arboreality of all macaque species. One study of long-tailed macaque behavior reported that they never came to the ground except within 5 m of the edge of a river near their tree.

The population densities of this diurnal species vary from 10 to 400 per squared kilometer.