At San Antonio's Southwest Foundation for Biomedical Research, Marabel Vasquez is monkeying around—but that's her job. She is the chimpanzees' behavioral specialist at the private research facility. She visits with the chimps, provides environmental enrichment and assesses their social dynamics.
On this January morning, it's overcast and 38 degrees, but the chimps brave the cold. Many are outside in their enclosed play area and welcome Marabel with hoots.