WASHINGTON - Tan belly pressed to glass, Torian, a thigh-high, 4-year-old chimpanzee with a freckled face, wants to be scratched.
When his veterinarian pretends to tickle Torian through the thick pane, the chimp bounds onto a hanging chain, squealing. Showing off, his cagemate Tiffany performs a handstand, pressing her butt to the glass. With the endless energy of children, they swing and climb, roll on the floor, and chew blankets and rubber balls.
The pair are, in a sense, the last of their kind: Just four chimps remain at this controversial research facility in Rockville, Md. Called Bioqual, the company's 30-year run of chimpanzee research is ending, victim of a historic shift away from using apes in medical experiments.
On Monday morning, a truck hauled six chimps from Bioqual. Last week, five others were removed. The last four, including Tiffany and Torian, will leave later this summer.
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They are returning to where they were born - the much larger New Iberia Research Center, part of the University of Louisiana-Lafayette - where they will be available for more research before they're retired - someday - to a sanctuary.
"This is another indication that chimpanzee research is on the decline," said Kathleen Conlee, of the Humane Society of the United States, which has painted Bioqual's chimp research as unethical.
While about 1,000 research chimps live in the United States - down from 1,500 in 1997 - a landmark report from the influential Institute of Medicine last December labeled nearly all chimpanzee research as scientifically unjustified.
The final National Institutes of Health-funded experiments at Bioqual tested vaccines against norovirus and respiratory syncytial virus, two studies the Institute of Medicine report called unnecessary. Chimps are no longer needed for such work, the report said.
Drug companies, which also fund some chimp research, are also backing away from the practice as lower-cost, higher-tech alternatives emerge.
For animal-rights activists, the departure of the Bioqual chimps represents a victory; they've been agitating to close the facility for decades.
In 1986, activists calling themselves "True Friends" broke into the unmarked, single-story building and stole four infant chimpanzees. They filmed chimps and monkeys stuffed into metal cages the size of ovens - stark footage soon seen by millions on the national nightly news.
The ensuing public outcry galvanized the burgeoning animal-rights movement, said Kathy Guillermo of People for the Ethical Treatment of Animals.
The Bioqual chimps will join some 350 others at the Louisiana lab. There, some chimps are kept indoors. But others get to roam outside, under geodesic domes, with fresh air to breathe and trees to climb.
