Black rhino calf at Chester Zoo.

Black rhino calf at Chester Zoo.

In the wild Black rhinos can reach an age of 40 years.

Black rhinos have the highest incidence among mammals of fatal interspecies fighting: almost 50 % of males and 33 % of females die from wounds. Fights between Black rhinos are usually for establishment and control of their territories. Why they are quite so aggressive is not known: in any event, rhino populations with high mortality rates recover only slowly. In captivity a male Black rhino has reached the age of 49 years, and a female has reached the age of 47 years.

 

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