An extremely rare cotton-top tamarin monkey has been born at Chester Zoo. The miniature species, weighing just 40g, is among the world's most endangered primates, with only about 2,000 left in the ...

Two critically-endangered monkeys have been born at Chester Zoo. The Cheshire zoo said the twin cotton-top tamarin monkeys were born to parents Leo and Treat, following a five-month pregnancy.

A great-great-grandmother Martha was known as 'the grand old lady of Chester Zoo' A 59-year-old orangutan who was "fundamental" to the establishment of a global conservation breeding programme has ...