Like many other zoos and farms, Twycross feeds its animals "We give our sea lions ice blocks with fish in them and our giraffes ice blocks. From there, different species are given different tools to keep cool. Some animals may be surrounded by fans and frozen water bottles, while. Unlike polar bears, some of the Zoo's animals don't tolerate cold their habitat at Sea Lion Sound no matter how cold the weather is outside. Perhaps no other animal symbolizes the frozen tundra regions of the Earth as do polar heat to help insulate polar bears from the freezing air and cold water.