Second graders are not accustomed to doing art projects while lying flat on their backs. But to get a feeling for the unpleasant conditions Renaissance artist Michelangelo endured while painting the ...

Frog and toad pupils come in quite the array, from slits to circles. But overall, there are seven main shapes of these animals’ peepholes, researchers report in the Aug. 25 Proceedings of the Royal ...

Take a close look at a house cat's eyes and you'll see pupils that look like vertical slits. But a tiger has round pupils — like humans do. And the eyes of other animals, like goats and horses, have ...

There’s a reason why the domestic cat’s pupil has its distinctive, vertical slitted shape and the grazing goat’s its horizontal, flattened look. In both cases, the eye’s shape has evolved to help its ...

Wolves and foxes are closely related and share many of the same characteristics. But look at their eyes – where wolves have rounded pupils like humans, foxes instead have a thin vertical line. But it ...