A new study in aye-ayes is the first to review nose picking in primates and reports the first evidence of the habit in lemurs.
You can't pick your primate relatives, but your primate relatives can pick their noses. And they enjoy the taste of what they find, researchers recently learned.
If you're curious about nose picking, you probably don't have to look very far to find examples of this behavior; it's commonly practiced by humans of all ages, as well as other primate species. But despite being frequent and widespread, nose picking is"poorly studied," scientists reported Oct. 26 in the Journal of Zoology .
In fact, that finger is so long and flexible that an aye-aye can insert"the entire length of its extra-long, skinny and highly mobile middle finger into the nasal passages" and reach all the way into its pharynx, the cavity that lies behind the nose and mouth and connects them to the esophagus. After withdrawing this questing digit, the aye-aye then"licks the nasal mucus collected," a practice known as mucophagy, the study authors reported.
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