Zoo officials announced that staff will continue to care for and monitor the health and well-being of the animals.

It was, said zoo officials, a promising sign but that was all.

Weather permitting, the cub will go on show for two hours each morning from now on, zoo officials said.

Zoo officials have launched an investigation.

Zoo officials estimated her chances of pregnancy at 10% after she had previously had five false pregnancies, in which she acted pregnant but was not.

Zoo staff introduced four female penguins in 2005, but the males showed no interest.

They forced the animals to release their grip - and zoo staff kept the powerful beasts at bay with fire extinguishers.

Zoo staff have appealed for help in tracing a flamingo blown out of its enclosure by a gust of wind.

The male land turtle weighed in at a massive 236,7kg and had to be carried onto the scale by four members of the zoo staff.

Zoo staff used drones in an attempt to locate it and police deployed a helicopter with thermal imaging devices.