hindquarters, and their faces are black with yellow-brown sideburns. Females' rumps are pink in color and males have a mane of fur around their heads and shoulders. A characteristic feature of baboons is their long molars and broad incisors. The long canines are evidence of sexual dimorphism in baboon species. Their forelimbs and hindlimbs are nearly equal in length and their digits on their hands and feet are relatively short and stout, making it difficult for them to climb. Baboons are one of the largest groups of monkeys and are sexually dimorphic in body size (meaning the males and females have differing body sizes). They can range in weight from 13 and 26 kg (28–57 lbs), making them among the smallest of the baboon species. Habitat and distribution Generally found in woodland savannas, Guinea baboons seasonally congregate near permanent water sources, breaking off in the wet season into smaller groups. Although baboon species are all allopatric, some of their ranges do overlap, and interbreeding does occasionally occur. These baboons are found in a wide range across Africa in savannah habitats including Guinea, Senegal, Gambia, southern Mauritania and western Mali. Most typically they are in the savannah and forests of sub-Saharan Africa. They can also be found in grasslands, rain forests, and other open areas. Ecology Guinea baboons are diurnal, living on the ground instead of in trees, and typically sleep in trees at the terminal ends of branches. Their group size is widely variable and ranges from 30 to 200. However, the most common troop size is 30–40 individuals. Often, a pronounced male hierarchy and fierce competition for females happens within the group. This competition leads to sexual dimorphism among the species. When it comes to feeding, they are independent foragers, and females are always paired with males when foraging so they can be protected. Females may choose to follow the same males from year to year. Diet Like other baboon species, Guinea baboons will eat any available foods, but their main sources are fruits, roots, tubers, grass, seeds and leaves. They also will eat insects, worms, spiders, small mammals, birds and invertebrates. Behavior Socially, Guinea baboons have more in common with Hamadryas baboons than other baboon species, living in one male units , consisting of one dominant male, several females and juveniles, and often a follower male. These groups are usually small, but join with larger groups to form