White rhinos are the second-biggest land animal. They belong to a group of hoofed animals called ungulates, and in Africa the rhino's closest relative is the zebra. A rhino's horns are made out of hair-like fibers stuck together with a type of natural resin like glue. Flattened feet and broad, three-toed hooves distribute the rhino's massive weight over a large area. At twilight this insect-eating robot bat hangs from a tree, waking to go out on its nightly forage for food.
Visitors can hear the ambient night sounds of crickets, other insects and birds in the distance.
The robot's fingers are lightweight tubes, and the material in between acts like a hang glider sail. During the day most bats roost in large groups in caves or hollow trees, hanging upside- down by their clawed hind feet. A bat's leathery wings are actually flexible flaps of skin stretched between incredibly long fingers. At night, bats hunt for food. Powerful springs in the two rear legs can compress and release to throw the robot into the air.