Hamilton Zoo says it has more than 600 animals, including monkeys, zebras and cheetahs.

CNN: Tiger kills zookeeper in New Zealand

Though the snakes here are metaphorical, there are plenty of animals to spot in the jungles of the vast Periyar Wildlife Sanctuary, including monkeys, tigers and about 1, 000 elephants.

BBC: Five family-friendly adventures

At Corcovado you can find tapirs, jaguars, pumas, anteaters, two-toed and three-toed sloths, golden orb spiders, moon crabs, a diversification of monkeys (including all four types of Costa Rican monkeys, found only in Corcovado), crocodiles, poison dart frogs, pelicans, 220 species of butterflies, scarlet macaws and even the rare and venomous fer-de-lance snake.

FORBES: Take A Trip To The "Happiest Country On Earth"

The sanctuary is also home to other retired animal actors, including orangutans and monkeys as well as chimps.

NPR: Cheeta, Screen Star for the Ages

Tests on monkeys, including ones in which the animals' eyes were held open to check that the beam does not blind, suggest it causes no permanent damage.

ECONOMIST: Electromagnetic weapons

At an animal hotel, Babe falls in with a circus family of monkeys, including a hip chimpanzee couple and a morose orangutan the animals, who speak in dark ironies, have the real depression of lifetime circus performers.

NEWYORKER: Babe: Pig in the City

Since then, attempts have been made at cloning other animals including mice, dogs, monkeys, pigs and even some endangered species.

CNN: Call for ban on human cloning

So far, the White House has offered 82 responses to petitions. including the official White House honey ale recipe, explaining that the Army no longer experiments on monkeys for medical research, and stating that the President opposes the Citizens United decision on corporate personhood.

FORBES: The 10 Craziest Citizen Petitions To The White House