In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Menopause before 40 was tied to a 30% higher risk ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...

In a reward-free touchscreen game, Japanese macaques favored a button that made a puppet pop up in somewhat unpredictable spots, like curious humans. Six zoo orangutans heard laughter before learning ...