Why do rhinos have 2 horns?
White rhinos, black rhinos, and Sumatran rhinos have 2 horns.
Greater one-horned rhinos and Javan rhinos have 1. Whether it's 1 or 2, rhinos use their horns as defense against predators and to challenge other rhinos.
Do rhinos have teeth?
Rhinos have 24-34 teeth, mostly premolars and molars for grinding (dental formula 1-2/0-1, 0/1-1, 3-4/3-4, 3/3).
The canines and incisors are vestigial except for the lower incisors in Asian rhinos, which are developed into powerful slashing tusks.
In general, African rhinos are more aggressive than Asian species.