Sheep
Animal pupils come all different shapes and sizes. A cat has slit shaped pupils, and a chicken has round pupils. Some goats even have time glass shaped pupils. Many different shapes.
They are rectangular.
There are several species of mongooses, with all studied specimens having horizontal-shaped pupils such as Herpestes auropunctatus, herpestes parvula, and Cynitctis penicillata. This is fairly unique as mongooses are some of the only predatory animals with horizontal pupils.
Maltese painted frogs can have triangular shaped pupils. Please see the related link for more information...
Hippo
Most animals have different eyes.
Goats have retagular shaped pupils.
cuttlefish
No, humans cannot have square pupils; human pupils are typically round due to the structure of the eye and how the iris and lens work together. However, some animals, such as certain species of goats and octopuses, can have pupils that are more rectangular or slit-shaped. Such variations are adaptations to their environments and lifestyles. In humans, any abnormal pupil shape would generally indicate a medical condition or anomaly.
The shape of an octopus' pupil is square-shaped.
An arc, or crescent shaped area beside the Ka'bah.
Because they are differently shaped, molded to help them survive in their habitats.