Just a month shy of her 20th birthday, Mandy was found dead recently inside the zoo's Tropical Forest, the Boston Globe reported Wednesday.

The exact cause of Mandy's death will not be known for months but head veterinarian Dr. Hayley Weston Murphy told the Globe she had been suffering from chronic uterine problems lately.

Charley, Mandy's mate of almost 10 years, is the zoo's only other mandrill.

Keepers are trying to distract Charley from the loss of his companion by giving him new toys and playing new nature videos on his VCR, the newspaper said.

Mandrills, close cousins of baboons, are found in the tropical forests of western Africa.

Their vibrant markings make them a favorite of zoo creatures. Males have reddish-purple snouts with bright pink stripes while females have splashes of color on their hairless hindquarters.