Cheyenne arrived at the Houston Zoo when she was 21 and quickly became a favorite among staff and visitors with her "intelligent and strong-willed" personality.

The Houston Zoo is once again mourning the loss of one of its resident orangutans. On Sunday morning, the zoo's 52-year-old ...

Orangutans belong to the Hominidae family, also called the great apes. They are highly intelligent and share around 96.4% of our DNA. Orangutans are the only great apes in Asia, making their homes on ...

Orangutans can live around 35-40 years in the wild, while the oldest orangutan to live in captivity died at age 62, according ...

Orangutans are great apes ... It turned out that these ex-captives did a multitude of prodigiously intelligent things. They took canoes for rides down the river, for instance.