Because of sketchy record keeping, some of the chimps' histories are a mystery.
One is Janice, a female now about 40 years old, who has spent most of her life in breeding and biomedical research programs, and a number of years confined alone.
"She's beaten down a little bit. She's not the same animal she used to be," said Brent, who works with the chimp at a lab in San Antonio.
He's confident that living in the outdoors at Chimp Haven will transform Janice back into her former self. "I have no doubt that at Chimp Haven, she'll become a very dominant, capable individual."



