A four-week-old albino puma cub plays with its mother at Thomas Belt Zoo in Juigalpa, Costa Rica, on Wednesday. AFP

"We are taking all measures to be able to keep him as healthy as possible, together with his mother," veterinarian Carlos Molina from the Thomas Belt Zoo said. "He is healthy, his body is in good condition," said the vet from the zoo in Juigalpa in Chontales department, about 140 kilometres from the capital Managua.

A month-old puma cub is seen at its enclosure at Thomas Belt zoo. Reuters

The fur of common pumas at birth is light brown or reddish with black flecks. The genetic mutation that causes white pigmentation is rare among the species, and there are hardly any documented cases in the world. "We are happy to have it because you don't see this very often," Molina said.

The puma is the second largest cat in the Americas after the jaguar, and the fourth in the world after the tiger and the lion.

A puma licks her month-old puma cub at their enclosure at Thomas Belt zoo, in Juigalpa, Nicaragua. Reuters

Zoo keepers have avoided contact with the small albino puma, which is growing up with its mother in a den set up in a fenced enclosure, and hope that within two months the cub will be able to receive veterinary treatment.