VIENNA, Austria (Reuters) — Lemurs hum to protect them from predators and increase social cohesion within their troop, according to a Canadian primatologist. Research carried out by Laura Bolt, from University of Toronto Mississauga, could help future studies on how ancient human ancestors socialized with each other. During her five-month stint at the Beza Mahafaly Special Reserve in southwest Madagascar Bolt studied two specific vocalizations – “moans” and “hmms” produced by male ring-tailed lemurs, the […]