They are rectangular.
The shape of an octopus' pupil is square-shaped.
Goats have retagular shaped pupils.
a mongoose have long faces and bodies small round ears short legs long tapering tails.
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 in little rectangle shape. It may be why they are associated with the devil.
Cat's pupils can change shape depending on the amount of light they are exposed to. In low light conditions, their pupils dilate to let in more light, appearing larger and rounder. In bright light, their pupils constrict into vertical slits to reduce the amount of light entering their eyes.
Sheep and goats have horizontal, oval pupils.
A male mongoose is called a mongoose
Mongoose
Several do. They fight each other, and birds attack them, but I guess the answer you're looking for is the mongoose.
Riki Tiki Tavi was a mongoose.