Females weigh roughly half as much as the male, at 10–15 kg (22–33 lb) and an average of 12.4 kg (27 lb).[2] Exceptionally large males can weigh up to 54 kg (119 lb), with unconfirmed reports of outsized mandrills weighing 60 kg (130 lb) per the Guinness Book of World Records.[10][11][12][13] The mandrill is the heaviest living monkey, somewhat surpassing even the largest baboons such as chacma baboon and olive baboons in average weight even considering its more extreme sexual dimorphism, but the mandrill averages both shorter in the length and height at the shoulder than these species.[14][11] The average male is 75–95 cm (30–37 in) long and the female is 55–66 cm (22–26 in), with the short tail adding another 5–10 cm (2–4 in).[15][16] The shoulder height while on all fours can range from 45–50 cm (18–20 in) in females and 55–65 cm (22–26 in) in males.