Animals in Danger of Disappearing

Vale, a four week old red titi monkey, sits on his dad Thiago's back in the rainforest. The San Martin titi monkey from Peru is on the endangered species list. Environmental groups say they will not survive unless they receive international protection. (2008 Getty Images)

Diego, a three month old howler monkey. (2008 Getty Images)

A day-old female Red-Faced Black Spider monkey whose mother died after giving birth, is shown at the Estoril Zoo in Sao Bernardo do Campo, 30 Km (20 miles) south of Sao Paulo, Brazil, on Wednesday, Aug. 10, 2005. (AP Photo/Alexandre Meneghini)

FILE - In this undated file photo released by Conservation International, a Tonkin snub-nosed monkey sits on the ground at an unknown location. Twenty-five species of monkeys, langurs, lemurs and gorillas are on the brink of extinction and need global action to protect them from increasing deforestation and illegal trafficking, researchers said Monday, Oct. 15, 2012. (AP Photo/Conservation International, Tilo Nadler, File) EDITORIAL USE ONLY (AP2007)

This photo released by the Perth Zoo shows a tiny rare White-cheeked Gibbon named Li-Lian. The Cao-Vit or Eastern black-crested gibbon is on the endangered species list. Environmental groups say they will not survive until they receive international protection.

This colobus is similar to Kenya's Tana River red colobus, which is on the endangered species list. Environmental groups say they will not survive unless they receive international protection. (AP)

An infant male endangered Francois Langur named Gan Ju, clings to his mother. Several species of langer are in danger of being extint. (2010 Getty Images)

In this picture taken Saturday, Sept. 15, 2012 and released by Virunga National Park on Monday, Sept. 24, 2012, Isangi, a 9-month old Grauer's gorilla that was rescued after being poached, interacts with a caretaker at Virunga National Park's Senkwekwe Orphan Gorilla Sanctuary, in Rumangabo, eastern Congo. Virunga National Park says the rescue of two poached baby Grauer's gorillas raises fears that other members of the endangered species found only in eastern Congo have been killed. Fewer than 4,000 Grauer's gorillas remain, down from about 17,000 in 1995. (AP Photo/Virunga National Park, LuAnne Cadd)

A veterinarian feeds a baby Crowned Sifaka lemur. The Propithecus verreauxi coronatus population, which lives in northwestern Madagascar, may be betweeen 100 and 1,000, and is categorized as "Critically Endangered" due to habitat loss or degradation from agriculture/livestock and wood harvesting. (AP Photo/Michael Sawyer)

A Philippine Tarsier, similar to the endangered Pygmy tarsier of Indonesia, eats a cricket inside a captive breeding center in Loboc town on Bohol island, central Philippines on Friday March 11, 2005. (AP)

Java slow loris, similar to this species, are on the endangered species list. Environmental groups say they will not survive unless they receive international protection. (AP)

Monkey Spider Monkey (Photo by Luis Davilla/Cover/Getty Images)

FILE - In this Saturday, Sept. 15, 2012 file photo released by Virunga National Park, a baby Grauer's gorilla that had been poached from Kahuzi-Biega National Park is seen at the Senkwekwe Orphan Gorilla Center at Virunga National Park in eastern Congo. Twenty-five species of monkeys, langurs, lemurs and gorillas are on the brink of extinction and need global action to protect them from increasing deforestation and illegal trafficking, researchers said Monday, Oct. 15, 2012. (AP Photo/Virunga National Park, LuAnne Cadd, File) EDITORIAL USE ONLY (AP2012)

An infant male endangered Francois Langur named Gan Ju, clings to his mother. Several species of langer are in danger of being extinct. (2010 Getty Images)

In this picture taken Friday, Sept. 21, 2012 and released by Virunga National Park on Monday, Sept. 24, 2012, Isangi, a 9-month old Grauer's gorilla that was rescued after being poached, is held by a caretaker at Virunga National Park's Senkwekwe Orphan Gorilla Sanctuary, in Rumangabo, eastern Congo. Virunga National Park says the rescue of two poached baby Grauer's gorillas raises fears that other members of the endangered species found only in eastern Congo have been killed. Fewer than 4,000 Grauer's gorillas remain, down from about 17,000 in 1995. (AP Photo/Virunga National Park, LuAnne Cadd) (AP2012)

An Indri lemur hangs on a tree in Madagascar's Andasibe National Park Sunday June 18, 2006. Madagascar is the only place in the world with native wild lemurs, and after decades of rampant logging and other practices that destroyed 90 percent of its unique rainforest, the island nation off southern Africa is investing in its nature. (AP Photo/Jerome Delay)