.orange-buff animal canines chevrotain colored colorful colors coloured colourful colours deer delicate distinctive elongated-upper-jaw-canines even-toed-ungulate fur greater-Malay-chevrotain greater-mouse-deer herbivore herbivorous hooves large-eyed miniature mouse-deer napu nocturnal Singapore-zoo small solitary terrestrial territorial tiny tragulus-napu triangular-head trusting wet-swampy-habitat zoo adaptable african baboon baboons bonding calluses canine-teeth crafty distinct dog-like-muzzles dogfaced fierce-fighters forage foragers foraging gestures grey-brown groom grooming ground-dwelling habitat-shrinkage hamadryas-baboons hierarchical-troops intelligent ischial-callosities large-canines mammal monkey old-world-monkeys omnivores omnivorous opportunistic papio papiocynocephalus-hamadryas play playing primates protruding-buttocks quadruped ruff sacred-baboon social socialize socializing troop vocalizations wildlife