Animal World: Most unusual zoos found across the globe

Caves of Sea Lions Oregon's Sea Lion Caves are the only known mainland rookery and wintering home of the Stellar Sea Lion. The unsual zoo serves as a resting place for a variety of birds, from Tufted Puffins to Bald Eagles

The High-Altitute Darjeeling Zoo The Padmaja Naidu Himalayan Zoological Park (a.k.a Darjeeling Zoo), specializes in breeding aninmals for alpine conditions, including the Snow Leopards, Tibetan Wolves, Red Pandas and Himalayan Newts. The zoo is also home to Blue Sheep.

The Biblical Zoo The Jerusalem Biblical Zoo highlights a collection of animals featured in the Hebrew Bible. The narrow focus has been difficult for the zoo to maintain, since many of the Bible's animals are now extinct in Israel. 

Old MacDonald's Farm A public park and petting zoo called Old MacDonald's Farm opened in Hampton, Virginia in the year 1966. Designed like a working farm, the park showcases farm animals and fowl as well as Virginia-native wild animals

The Butterfly Zoo The U.S. is home to at least 35 butterfly gardens, homes and exhibits, but the oldest is Florida's Butterfly World, which opened in 1988. Butterfly World also holds the distinction of being the world's largest butterfly park

The Zoo in a Rainforest Panaéwa Rainforest Zoo and Gardens in Hilo, Hawai'i is the only U.S. zoo located in a rainforest. At just 12 acres, Panaéwa is a small zoo, but it boasts a popular white Bengal Tiger named Namaste. The free zoo is home to more than 80 different animal species, a petting zoo and a butterfly house

The Koala Sanctuary Home to the world's oldest and largest koala sanctuary in Australia, the Lone Pine Koala Sanctuary is also home to other Australian animals including kangaroos, Tasmanian devils, wombats, echidnas, parrots and cockatoos, reptiles and a platypus

International Centre for Birds of Prey The International Centre for Birds of Prey located in Gloucestershire, England and houses some 60 species of owls and other birds of prey. The Centre has about 20 to 40 trained birds residing in its hawk Walk, an assortment of birds that rotates throughout the year to give the birds a break from the spotlight

The Amusement Park Resort Zoo Flamingo Land, which opened in 1959 in England named for its popular colony of pink flamingos, some of the first animals housed at the park, but today the zoo is home to more than 120 species of animals

The World's Most Northern Zoo Norway's Polar Zoo is the world's most northern zoo and the zoo with the biggest area per animal ratio. Spread over 114 acres, the zoo focuses on creating a "Scandinavian wilderness experience", showcasing animals in their natural habitats

The Harem's Zoo Egypt's Giza Zoo, an 80 acre zoological garden encompassing Giza's largest park, first opened in 1891 on land that was once part of the harem gardens. The original collection of animals was taken from the private menagerie of Imsa'il Pasha, the Khedive of Egypt from 1863 to 1879.