The earliest known zoo was the Park of Intelligence in the province of Hunan. It was started by a Chinese ruler about 1150 B.C. Today zoo facilities are limited and zookeepers annot keep every animalon display year round in the winter in colder climates. Most birds must be brought indoors , but zookeepers cannot always keep each bird on view for the public. Many visitors are surprised to see that some animals remain outside all year. Penguins , polar bears , and timber wolves are happy outdoors in wintertime. Some animals are always indoors in nothern areas ; for example, reptiles and small desert animals always have indoor displays.Zookeepers must provide indoor shelters for large animals such as elephants how large tohse shelters must be! Today zoologistsunderstand much more about animal behaviour and zoos are being designed that are similar to the animal's natural habitats .Viewers can closely observe animals at animal parks , animals roam free. Zoo kitchens keep a varity of foods and these are used to prepare meals that meet each animal's nutritional needs. Zoo contribute to wildlife conversation ; for example, they nurture species that are in danger of becoming.extinct.
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