Almost everything you said about mandrills is wrong. Mandrills are not baboons – they are now separate groups. Mandrills are omnivores, and their dentition is adapted for a wide range of diets like grass and tubers. Like baboons, they will eat meat if they can get it. Mandrills are mainly terrestrial and do not use their tails to “escape and capture prey in trees.” Mandrills and baboons are actually quite docile creatures. Occasional fights happen between males for access to females, but for the most part, mandrills are peaceful, graceful creatures.