The big question is why does a hiccup cause the muscles of the iris to contract which opens the aperture of the pupil i.e. the eyes dilate? This normally happens when the surroundings become dark and the eye has to … Continue reading →
This is a photograph of an all-white Maine Coon cat with heterochromia iridum. In layperson’s language, this beautiful cat has odd-eye colour. And it is a classic case of odd-eye colour because one eye is yellow-gold and the other is … Continue reading →
The total amount of melanin (pigment) in the iris of the eye determines the range of eye colours in cats and in humans. The same principles apply to all animals with a similar eye anatomy. The pigment ‘melanin’ is produced … Continue reading →
Yes, cats’ eyes are more sensitive to light than those of humans. This is why they shine in the dark because of a reflective layer behind the retina which is called the tapetum lucidum – translation: “bright tapestry”. Humans do … Continue reading →
The domestic cat has a tendency to be more active at night although they are not wholly nocturnal. They are described as crepuscular, meaning active at dawn and dusk when hunting is more successful. In general, when possible they tend … Continue reading →
The question in the title is probably meant to mean: do cats see objects under ultraviolet light only? For humans, ultraviolet light is beyond the visible spectrum and so we can’t see it. However, fundamentally, the anatomy of the cat’s … Continue reading →
Cats cannot see infrared light because it is not part of the visible spectrum. In this way cats are identical to humans except there MAY be a difference in that it is said that cats might be able to see … Continue reading →
This is a really nice picture of a cat, actually a cat with a big following on Twitter whose name is Curious Zelda, with wide open pupils because it was taken in low light conditions. You can click on it … Continue reading →
This is a strange picture of a cat. Her eyes have what appears to be makeup on the outside edges so they look like somewhat like the eyes of the famous and grossly sad Cat Woman, Jocelyn Wildenstein. In other … Continue reading →
Domestic cats have three eyelids. I will explain where they are. There is one eyelid above the eye which comes down over the eye when the cat blinks. The second eyelid is below the eye. This mirrors human anatomy. The … Continue reading →
