Mandrills live in troops, which are headed by a dominant male and include a dozen or more females and young. They also gather in multi-male or multi-female groups that can include some 200 individuals. I could recollect reading on one of the other blogs that, "for that one male amongst his pride of such huge number of females...I guess he earned the name "man-drill". That is so true, Don't you think?
Though I personally feel these are not as bad as the Ugly Bald Uakaris, these colors make them look strange and weird.
Like all monkeys, mandrills communicate through scent marking, vocalizations, and body language. Sometimes mandrills shake their heads and "grin" widely to show their enormous canine teeth, which can be over 2 inches (5 centimeters) long. This may appear scary to us, but it’s usually a friendly gesture within the mandrill community.