because they are square
They are rectangular.
Yes, and only a few species have rectangular eyes. Sheep, Goats, Octopuses and Toads have these rectangular shaped pupils. Typically classified as prey, these animals need to have a defense both day and night. But they don't have vertical slits due to their need to survey their surroundings more accurately. The narrower the pupil in relation to the horizon, the greater the accuracy of depth perception is in the peripheral vision of the animal. The perception of depth must be considered with these animals who spend their time evading predators in a rugged terrain. From The Evolution of The Rectangular Eye http://www.science20.com/variety_tap/evolution_rectangular_eye
Goats have rectangular pupils, which may appear strange compared to the round pupils of other animals. This unique eye shape allows goats to have a wide field of vision and excellent depth perception, which helps them detect predators. Additionally, their pupils can change shape to adapt to different lighting conditions.
No, Emperor Penguins do not have square pupils. Their pupils are round like those of most other birds. Square pupils are more commonly found in species such as goats and octopuses.
Sheep and goats have horizontal, oval pupils.
because they are square
They are rectangular.
No, their eyes are round, however, the pupils in their eyes are rectangular.
Goats, sheep, cattle and horses.
Goats. Also octopi. But octopi aren't mammals. Right?
Yes, and only a few species have rectangular eyes. Sheep, Goats, Octopuses and Toads have these rectangular shaped pupils. Typically classified as prey, these animals need to have a defense both day and night. But they don't have vertical slits due to their need to survey their surroundings more accurately. The narrower the pupil in relation to the horizon, the greater the accuracy of depth perception is in the peripheral vision of the animal. The perception of depth must be considered with these animals who spend their time evading predators in a rugged terrain. From The Evolution of The Rectangular Eye http://www.science20.com/variety_tap/evolution_rectangular_eye
Goats have rectangular pupils, which may appear strange compared to the round pupils of other animals. This unique eye shape allows goats to have a wide field of vision and excellent depth perception, which helps them detect predators. Additionally, their pupils can change shape to adapt to different lighting conditions.
no
Goats have retagular shaped pupils.
No. They have rectangular pupils like a goat, horse, or cow would, not square.
Sheep
No, Emperor Penguins do not have square pupils. Their pupils are round like those of most other birds. Square pupils are more commonly found in species such as goats and octopuses.