Admassu Getaneh marches past flowering herbs and thick grass along the edge ... that the monkeys flush out rodents, and the wolves actually get more to eat. Yet much about geladas remains unknown.

She has been wandering and eating grass after escaping her zoo enclosure last Friday Alexa Robles-Gil From the 1950s to the 1970s, researcher John Calhoun gave rodents unlimited food and studied ...