The zoo says the Carruth Natural Encounters building built in 1962 "has provided countless memorable experiences" for guests.

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 home to more than 6,000 animals and it is the second most visited zoo in the U.S. Exhibits range from the African Forest, which features rhinos, zebras and giraffes, to the new ...