Heterochromia is a condition where one eye is in a different color than the other one. It is caused as a result of the relative excess or lack of melanin (a pigment). It may be inherited, caused by genetic mutism, disease, or injury. |
About half of the animals that have this condition are deaf on the side of the changed eye color. But other than this fact, it causes no other problems or discomfort, and it does give your pet a very different look! |
The main reason for this phenomenon, however, is melanin, a coloring agent whose brown-black tone darkens the iris. |
The melanin can mostly be found in the skin, where it affects its color, but also in the hair nad eyes. People with blue eyes, for example, have an iris with a low melanin concentration, just like blond hair. |
The Heterochromia iridum (or just Heterochromia) is a condition that is found mostly with cats and dogs (with dogs mostly the Huskies and Austrlian Shepard dogs), but it has also been seen in other animals, such as horses and even weasles. |
Submitted by: Sarah G.
The Animal Eye Challenge!
How much do you know about the animal kingdom? Could you recognize an animal just by its eyes? Come try our animal eye challenge, and guess the animals standing behind the following 25 pairs of eyes.
15 Incredible Photos of the World Underwater
Thousands of talented photographers registered for the British competition of the underwater photographer of the year!
Why Do Cats Sport Vertical Pupils?
Why do they need these vertical pupils? Learn all about it right here in this fascinating video.
These Adorable Animal-Friends are Incredibly Heartwarming
Enjoy 16 heartwarming photos of animal friends.
New From Nature: 11 New Animal Species Discovered in 2022
Today, we will acquaint you with 2022's 11 newly discovered species of animals and delve into the reasoning behind their distinctive names.
A Dolphin Asks a Human for Help!
We have seen animal rescue, but rarely have we seen the animal search for humans to save it!
Some Flowers Are Absolutely Stunning - Like These Beauties
The petals on these flowers make such beautiful ornaments that you'll wish you were a bee.
This is One of the Most Fascinating Natural Phenomenon
Get ready to meet a whole lot of grunion fish, who are most famous for their spectacular land mating ritual.
I Can't Believe a Dull Fish Can Make Such Beautiful Art!
You've heard that birds exhibit magnificent courting rituals, but none of them compare to what the puffer fish gets up to. What an artist!
The Top 10 Animal World Record Holders Are Totally Awesome
From a bird doing slam dunks to a dog freely skateboarding through a human tunnel, here are the top ten animal Guinness World Record holders!
17 Utterly Beautiful Photos of Japan's Cherry Blossoms
The sight of blooming cherry blossoms is synonymous with springtime Japan. Take a look at these beautiful photos to remind you what a wonderful season this is.
Britain's Wildlife Is Stunning & These Photos Prove It
The British Wildlife Photography Awards has just announced the 2016 winners of their annual competition. Take a look.
Life in the Treetops: A Look at Tree-Dwelling Animals!
Let’s take a deep dive into the secret lives of arboreal animals and the challenges they face in their natural habitat.
These 17 Animals Could Definitely Model Hair Products
These animals have prettier hair than most people you know, and it's all natural!
The Ocean’s Floor Is Alive with Colorful Sea Slugs
The ocean is vast and mysterious, populated with alien like colorful creatures. These sea slugs are mesmerizingly beautiful.
Everything You Always Wanted to Know About Dogs!
How much do you know about our furry friends?
The Unchallenged Beauty of 14 Waterfalls Worldwide
Admire the beauty and power of 14 picturesque waterfalls from every corner of the planet
The Wonders of the Maasai Mara in 10 Award-Winning Photos
Prepare for the wildlife adventure of a lifetime!
I Can't Stop Laughing at These Cows Who Think They're Dogs
A cow probably isn't the first thing that springs to mind when thinking of man's best friend, but here are 16 photos which prove that they actually are!
Witness the Beauty of Birds in This Gorgeous Collection
In this collection, we’ve compiled the very best bird photos we could find - from stunning birds or paradise to most exotic birds on Earth
Human Cultivation Changed These Plants Beyond Recognition!
These 8 familiar fruits and vegetables changed so much when people started cultivating them, you won't be able to recognize them!
8 Curious Facts About Cheetahs You Probably Didn’t Know
There’s so much more to the cheetah than its speed. Learn some little-known facts about the animal.
8 Animals That Hibernate During Winter
We have all heard how bears hibernate during the winters. Here are 8 more animals that protect themselves from the cold by hibernating.
Close-Up Photographer of the Year 2022: 15 Winning Images
Check out some of the most stunning entries from the Close-Up Photographer of the Year Challenge.
These Rapid Blooming Flowers Will Brighten Your Day
This video of flowers blooming will brighten your day. So, go ahead, treat yourself to a few minutes of beauty and relaxation.
The Sheer Beauty of Nature Is Captured in Words & Images
Enjoy these spectacular photos alongside some words of wisdom.
Amazing Nature: Can a Lion Fend Off 20 Hyenas?
What happens when Red the lion gets attacked by a pack of hyenas?
Rain Adds So Much More Beauty to Nature...
Flowers are way more beautiful after some rain has fallen. Don't believe us? Check these photos out then!
Slovakia is Nature’s Masterpiece! (12 Gorgeous Photos)
Photographer captures breathtaking nature photographs from Slovakia. Take a look at some of his best ones.
Prepare to Witness the Majesty of Mother Nature!
If you love nature even half as much as I do, then this stunning collection of photographs is bound to take your breath away, and leave you gasping for more!
22 of Nature Photography's Most Exquisite Moments!
The NG website has a daily photo of the day page, from which we've selected 22 incredible examples of nature's undeniable and breathtaking beauty. Undoubtedly, you also deserve to enjoy these amazing pictures from the last few months.
5 HUGE Waves You Wouldn't Believe if it Wasn't On Video
These huge waves are probably not the biggest to ever happen, but they're definitely the 5 biggest waves ever caught on video.
These Creatures Are So Scary You'll Be Happy They're Extinct
Once you read more about these extinct animals - you'll be happy you won't have to see them in real life.
Dr. Hodges - The Vet That Cures Exotic Cute Pets
In this video, we meet Monty, the pet axolotl. It's his first visit to the Vet!
This Bird of Prey Is the Undisputed King of the Skies
The Peregrine falcon is far from the average avian predator as this awesome video proves!
Who Said Minerals Can't Be As Beautiful As Gems?
The most beautiful minerals in the world show themselves in these stunning photos.
15 Magical Pics Presenting Nature in Its Finest Glory
Take a look at this magnificent collection of nature pictures that will transport you to a different world.
World's Finest Wildlife Images Crowned for 2023: 16 Pics
Check out the outstanding winners of One Eyeland’s 2023 Wildlife Photography Awards.
Beautiful! This Nimble Bird is a Magical Sight to Watch
Both strong and beautiful the hummingbird is a magical sight to watch. Look through this beautiful tribute to the nimble bird.
These Are the Best Nature Walks in the Entire World
There's no doubt that walking in nature is good for the soul, so imagine what it would do for you along the very best routes in the world. Here are 10 of them.
Nature After Dark: Exploring 8 Nocturnal Animals
Let us take you up close and personal with some of the most unusual nocturnal animals of our world.
20 Beautiful and Exotic Dog Breeds I'd Love to Get to Know!
Here you can enjoy our collection of 20 beautiful photos of exotic and very rare dogs you won't find at your local park.
Our Planet is Full of Beauty! Take a Look at These Photos
Our planet is incredibly beautiful. Here are 15 stunning photos of planet Earth.
This Microscopic Animal is Probably Immortal
Not unlike the mythical hydra, real life hydras are microscopic organisms that have incredible regenerative abilities...