Horses and Sheep and Their Amazing Eye Movements (Accessible Preview)

305 views · Published 27 October 2017 · 1:43 · Indexed 20 September 2026

Channel: Described and Captioned Media Program · 2017 · Education

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New research led by scientists at the University of California, Berkeley, suggests that the shape of some animals' pupils could reveal whether one is hunter or hunted. An analysis of 214 species of land animals shows that a creature's ecological niche is a strong predictor of pupil shape. Species with pupils that are vertical slits are more likely to be ambush predators that are active both day and night. In contrast, those with horizontally elongated pupils are extremely likely to be plant-eating prey species with eyes on the sides of their heads.

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