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5 Crazy Cat Anatomy Facts

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5 Crazy Cat Anatomy Facts

Curiosity about cats has followed humankind since the days before Egyptian pharaohs treasured them as signs of good fortune. Much more is known today about what makes these graceful critters tick, yet we’re still mesmerized by a cat’s nighttime eyes and find comfort in the mysterious vibration of a gentle purr. Taken individually, the bits and pieces of cat anatomy and behavior are a crazy quilt of Morse code, text messaging and DIY survival tips. Together, they’re a medley of fun facts that add up to a fur-covered package of intrigue. Let’s look at five unusual cat anatomy facts.

5. Eyes That Glow in the Dark

Green, gold, blue or yellow, cats’ eyes are fascinating orbs that gleam in darkness. Think of the famous Cheshire cat, whose eyes and grin taunted Alice in Wonderland. Use a flashlight beam to observe your cat in a darkened room. That spooky shine is visible even in dim light.

Cats’ eyes have pupils that are larger than humans’, and are controlled by a pair of shutter-like ciliary muscles, creating the cat’s distinctive slit-like pupil in bright light. In darkness, light hitting feline eyes is reflected from a mirror-like membrane behind the retina. This structure is called the tapetum lucidum, and is present in the eyes of cats, dogs, some fish and birds, and other nocturnal hunting animals.

When light enters a cat’s eyes, it goes through the retina, where light-sensor cells, called rods and cones, absorb it. Any unabsorbed light reaches the tapetum lucidum and bounces back to the retina, enabling it to take in more light. Animals with the tapetum lucidum have greater night vision because it lets them absorb more light. This is a great help when looking for prey at night. Cats need only about one-sixth of the light humans need to function in the dark.

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Read more: Behavior & Communication, Cats, Do Good, Pets, , , , , ,

By Kathy Blumenstock, Animal Planet

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408 comments

+ add your own
2:12PM PDT on May 22, 2013

lol ty

8:48AM PDT on May 21, 2013

xox

8:48AM PDT on May 21, 2013

xox

8:48AM PDT on May 21, 2013

xox

5:36PM PDT on May 19, 2013

Thank you for this delighful article !!! how I wished my cat purred more ... ( sigh ) !!

12:03PM PDT on May 15, 2013

my kitty is my BABY. a close second to my own child, and the heart of our home

3:14PM PDT on May 12, 2013

thanks so much!

1:16AM PDT on May 6, 2013

Thanks

11:23PM PDT on May 5, 2013

great article, thx!

3:06PM PDT on Apr 23, 2013

They are such beautiful, clever animals. People don't give them as much credit as they deserve.

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Disclaimer: The views expressed above are solely those of the author and may not reflect those of
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people are talking

What a neat article! These are all news to me. Thanks for sharing!

Really cute kitty, but, it looks like there is something wrong with him/her.

I just had to share this on Facebook. I found this funny.

awwwwwwwww - silly kitty :-)

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