Top 10 Animals that Can’t See the Color Red

Metal_Treasure
The ability to see colors depends on the cones inside the eyes - less cones, or missing cones, is a sign that an animal can't see particular colors.

The Top Ten

1 Bull

Surprised? Most probably, yes. But I wanted to surprise you. Bulls are color-blind and they see in B&W (and grey). Bulls charge the red cape (muleta) because it is moving and not because it is red. A bull would charge all moving capes regardless of color. So why is the muleta red then? Because its red color helps mask the gruesome aspect of a bull fight: splatters of blood. - Metal_Treasure

Now that suprised me! - Userguy44

2 Dog Dog The domestic dog is a wolf-like canid in the genus Canis, and is the most widely abundant terrestrial carnivore.

They can't see red, orange and green. The only colors a dog can see are yellow and blue. Some say that dogs can also see violet but I've never been a dog and I can't say who is right.

The colors dogs can't see appear yellow or blue to them. So the dogs see the world mostly in yellow & blue (and maybe some violet spots here and there, but that's not sure). - Metal_Treasure

3 Rabbit Rabbit Rabbits are small mammals in the family Leporidae of the order Lagomorpha, found in several parts of the world.

It can see blue and green only - Metal_Treasure

4 Cow Cow Cattle—colloquially cows—are the most common type of large domesticated ungulates. They are a prominent modern member of the subfamily Bovinae, are the most widespread species of the genus Bos, and are most commonly classified collectively as Bos taurus.

Cows can't see red and green, which means they see red and green as a version of gray or black. - Metal_Treasure

5 Owl Owl

They are color blind, including the color red, because in the back of the retina they have a reflector that reflects light. - Metal_Treasure

6 Squirrel Squirrel Squirrels are members of the family Sciuridae, a family that includes small or medium-size rodents. The squirrel family includes tree squirrels, ground squirrels, chipmunks, marmots, flying squirrels, and prairie dogs amongst other rodents.

They can see yellow and blue only - Metal_Treasure

7 Rat Rat Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus.

It can see blue, green and ultraviolet (! ) but can't see the color red - Metal_Treasure

8 Bee Bee

It can see blue, yellow and ultraviolet. - Metal_Treasure

9 Jumping Spider Jumping Spider

It can see only 2 colors: green and ultraviolet. - Metal_Treasure

10 Cuttlefish Cuttlefish Cuttlefish are marine animals belonging to the class Cephalopoda, which also includes squids, octopuses, and nautiluses. Despite their name, cuttlefish are not fish but mollusks. ...read more.

Cuttlefish is color-blind although it can change its own colors to hide from a predator. - Metal_Treasure

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