The mandrill ranges through Cameroon, Gabon, Equatorial Guinea, and Congo West Africa.
Dense tropical rainforests and coastal forests, montane and thick secondary forests as well as thick bush.
- Male mandrills average 32 inches (81 cm) in length with a three to five-inch (7-12 cm) tail: females are about 22 inches (55 cm) long.
- Males weigh up to 60 pounds (27 kg); females weigh about 27 pounds (12 kg).
- Mandrills have dark brown to gray fur with lighter fur underneath.
- Males have yellow beards, bright red and blue snouts, colorful red and blue rumps, and bright red genitals.
What Does It Eat?
In the wild: Fruits, seeds, leaves, greens, roots, fungi, ants, spiders, worms, bird eggs and small vertebrates.
At the zoo: Monkey chow plus fruits, vegetables, greens, seeds, nuts and eggs.
What Eats It?
Predators of the mandrill include leopards, crowned hawk-eagles, and snakes.
Mandrills are social animals living in groups of 20 or more animals, most often consisting of a dominant adult male, multiple adult females and juveniles. Super troops of several hundred mandrills may gather when food is readily available. Many adult males live alone, only joining large groups during the breeding season when they fight for breeding rights. Mandrill troops stay together for years.
Females reach sexual maturity at four to five years but males are usually several years older before they are strong enough to win breeding rights. Females have a prominent estrus swelling that clearly identifies their reproductive status. Gestation is about six and a half months resulting in a single offspring weighing one to two pounds (.4-.9 kg). Mandrill infants are born covered with fur, and with their eyes open. They cling to the mother’s belly or back as she moves through the forest. Only females care for the infants, and they are weaned at six to 12 months. Selection of appropriate foods is behavior youngsters learn from their mothers. Females remain with their mother throughout their life but males leave the group when they reach maturity. Mandrills can live up to 30 years in the wild and up to 40 years in captivity.