Sexual Dimorphism: Males are much larger than females, have much larger canine teeth, and develop a large inflatable bulb on the nose.

Length:
Average: 3.8 m males; 2.5 m females
Range: 3.6-4.2 m males; 2.2-3 m females

Weight:
Average: 1,800 kg males; 650 kg females
Range: 1,500-2,300 kg males; 400-800 kg females