Cats and many other animals, including most dogs, can reflect light from their eyes. That’s why cats’ eyes will usually shine brightly in photos taken in a dimly lit room or glow when illuminated in ...

Q: I recently adopted a handsome orange male tabby cat named Henry. At night, his eyes are luminescent, reflecting a variety of bright colors. Is he unusual, or do all cats' eyes shine in the dark?

Only Slate Plus members can gift Slate stories. Become a member to share 10 free articles a month. There, at the corner of your yard, where the woods creep up and ...

Life above the Arctic Circle is not easy — cold, wind, snow, a couple months of total darkness — but the creatures that live there have evolved to handle the harsh conditions. Arctic reindeer, for ...

In the pure white snow, reindeer are diligently searching for something. It's lichen. Reindeer are the only ruminants whose main diet consists of lichen. How do reindeer find their food on ...

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The Conversation is asking kids to send in questions they'd like an expert to answer. Chloe, age 10, wants to know why cats' eyes glow in the dark. An expert in veterinary ophthalmology explains. Cats ...