英语时差：猴妈妈的爱（上）

Picture a mother cradling her newborn infant. She looks intently into the baby’s eyes, making kissing noises. It’s a typical scene, right? Except that the mother and baby aren’t human. They’re rhesus macaque monkeys. Until recently, scientists assumed that humans and chimps are the only animals that interact so intimately with their offspring. And in more than fifty years of studying macaque monkeys in captivity, nobody had noticed similar behavior. That may be because macaque babies spend most of their time asleep. Scientists at the National Institutes of Health, though, managed to catch macaque mothers and babies together. And they found that, just like people and chimps, macaques can be very tender.