Interesting article from 1994 about incidences in New Zealand Zoos. https://www.nzgeo.com/stories/new-zooland/ The death of the Sumatran tigress, Toba, at Wellington Zoo in 1993 is discussed and the reason for her death is revealed. She was indeed killed by the male, Jambi, as people have previously speculated. The orangutan mentioned in the incident at Auckland Zoo in March 1994 is Indra. She was pregnant with Isim, who was born in June. Shocking revelations regarding the hippopotamus at Auckland Zoo. The female who gave birth to a stillborn calf, due to genetic problems from inbreeding would be Faith. Faith had a total of 14 calves, all sired by her father, Kabete. Several calves died, having been killed by other hippos. Keepers killed a newborn calf in 1992 after birth control measures failed to prevent the same fate. Her son Fudge was neutered in 1993, which as mentioned, carries high risks and lead to the death of another male hippo.