The female calves are raised to live like their mothers as milk machines.
In 1999, one of the park's white rhinos gave birth to a female calf named Nande.
On March 14, 1992, Samoa went into premature labour, and died giving birth to a female calf a few hours later.
All of the female calves remain, however.
Takara has since given birth in 2010, to a female calf named Sakari.
In 2012 the Beluga whale Maris gave birth to a female calf.
You get a freemartin when a female calf has, a twin brother.
The okapi bred for the first time in 2012, producing a female calf.
This case was reported in 2006, with the death of a young wild-born female calf at an elephant sanctuary in Cambodia.
On November 13, 2012, Stella gave birth to a female calf.