Scientists made graduate students provoke spitting cobras into attacking them, coordinated assaults on humans by mockingbirds, induced regret in monkeys, and tickled five young bonobos, four young chimpanzees, five young gorillas, seven young orangutans, and one young siamang.
Scientists made graduate students provoke spitting cobras into attacking them, coordinated assaults on humans by mockingbirds, induced regret in monkeys, and tickled five young bonobos, four young chimpanzees, five young gorillas, seven young orangutans, and one young siamang.
