By Maarten Rikken A study released in Current Biology has found that bonobos’ eyesight becomes significantly reduced when they reach aroundRead more
Ten (male, 45 years old) grooms JD (male, 21 years old). Ten is the oldest bonobo in his group. He requires 40 to 45 centimeters from his fingers to his eyes to focus on grooming. Credit: Heungjin Ryu.