When I was a teenager, I lived with a brown capuchin monkey. Among other games, we enjoyed trading: his poker chips for my food. When he was out of poker chips, he would improvise by finding pebbles, paper, toys, and other household detritus to trade. When all was traded into my pile, he would give me his tail, feet, and hands by placing them, one by one, in my mouth.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.