De Nys, Helene Marie; Bertschinger, Hendrik Jan; Turkstra, J.A.; Colenbrander, B.; Palme, Rupert; Human, A.M.
(South African Veterinary Association, 2010)
Aggressive behaviour and musth are constant problems in captive and sometimes in
free-ranging African elephant bulls. Aggressive bulls are difficult and musth bulls almost
impossible to manage without severely restricting ...