An adult chimp plays with a young chimp at Chimp Haven in Keithville, La., Monday, Feb. 18, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)

Associated Press
An adult chimp plays with a young chimp at Chimp Haven in Keithville, La., Monday, Feb. 18, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)
An adult chimp plays with a young chimp at Chimp Haven in Keithville, La., Monday, Feb. 18, 2013. One hundred and eleven chimpanzees will be coming from a south Louisiana laboratory to Chimp Haven, the national sanctuary for chimpanzees retired from federal research. (AP Photo/Gerald Herbert)
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