Can Dogs see in black/white or colour?

Answer 1

Dogs do not see in black and white, they have colour vision similar to red/green colour blind people. They only possess two of the three types of core (colour sensing cells in the retina). There are three types of cone: blue, green and yellow (often called red). Dogs only have blue and yellow and the yellow core detects yellow and red. When the yellow gets stimulated it signals either yellow or red, the yellow when mixed with signals from the blue receptors will detect green. Therefore dogs can not detect the difference between red and green. What do dogs see? A review of "Vision in dogs"

Answer 2

The idea of dogs seeing in black and white is partially true. In recent tests, it has been found that dogs can see grays, blacks and whites, but also some shades of blue and green.

Answer 3

Dogs are the equivalent of red/green color blind in humans. That is, they do see some colors, but they cannot differentiate between red and green. Colors that they do see very well are yellow and blue. Try throwing an orange or red ball or bumper on green grass and see how much trouble the dog has finding it.

Answer 4

Dogs are able to see some colors, with blues and yellows being what they see the best. It's a bit muted compared to what most humans see, but still colors all the same.

Answer 5

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Answer 6

dogs can only see in black and white.The annoying thing about dogs not seeing in colour is when i throw the ball for my dog, she can't see it because she is colour blind!

Answer 7

there are more shades of black and white than colour , so I would imagine that carnivorous hunters would see in that shade

Answer 8

black and white

Answer 9

both they can see in faint colors so they can see some colors more than others

Answer 10

A Dog's Vision
Dogs can see far better than humans can. They have heightened peripheral vision and excellent night vision. Interestingly, dogs can sense movement much better than humans, but we see stationary objects more clearly than they do. Since dogs' ancestors hunted only things that moved, they had no need for good stationary eyesight.Dogs can see in much dimmer light than humans. This is because the central portion of a dog's retina is composed primarily of rod cells that "see" in shades of gray while human central retinas have primarily cone cells that perceive color. The rods need much less light to function than cones do.

Dogs can detect motion better than humans can.

Dogs can see flickering light better than humans. The only significance to this appears to be that dogs may see television as a series of moving frames rather than as a continuous scene.

Dogs do not have the ability to focus as well on the shape of objects (their visual acuity is lower). An object a human can see clearly may appear to be blurred to a dog looking at it from the same distance. A rough estimate is that dogs have about 20/75 vision. This means that they can see at 20 feet what a normal human could see clearly at 75 feet.

Dogs are said to have dichromatic vision -- they can see only part of the range of colors in the visual spectrum of light wavelengths. Humans have trichomatic vision, meaning that they can see the whole sprectrum. Dogs probably lack the ability to see the range of colors from green to red. This means that they see in shades of yellow and blue primarily, if the theory is correct. Since it is impossible to ask them, it is not possible to say that they see these colors in the same hues that a human would. Whether or not the ability to see some color is important to dogs or not is hard to say.

Also consider the perspective that dogs see the world from. A dog with its eyes about 12 inches off the ground certainly sees the world a different way than a human with eyes about 48 inches off the ground like many 5th graders.

As humans we tend to think of dog's visual capabilities as inferior to ours. It is different but it may suit their needs better than possessing accurate color vision would.


Michael Richards, DVM



A Dog's Hearing
A dog's hearing is more acute than a human's at both a lower volume and a higher frequency. In fact, dogs hear sounds at such a high frequency that humans can't hear them at all. Again, in the past, this helped them with tracking and hunting down prey in the past.

A Dog's Sense of Smell
Smell is a dog's most highly developed sense. Dogs' wet noses dissolve the scent molecules and help them detect smells that humans can't perceive. Many dog experts believe that the canine sense of smell allows dogs to communicate with one another and helps define their relationship. Dogs use their olfactory senses to interpret other dog's pheromones and learn important information regarding gender and receptivity to mating.

How Do Dogs Use Their Senses?
Certain dog breed groups have specialized senses. Some have a super keen sense of smell. Others have what might seem like supernatural hearing. Look at the dog breed groups below for specifics.

Hunting Dogs
Hunting dogs, also known today as sporting dogs or field dogs, were bred to help hunters in their pursuit of game. Scent hounds were used in Persia and Egypt, and were the earliest dogs used in hunting. Sight hounds were a European group of dogs that used their amazing endurance to chase down prey. Today, several breeds of dog are descended from this interesting heritage.

Generally, sporting dogs did not actually capture the game they were chasing. Rather, they knew to stop and alert the hunters so they could take the shot. Their incredible sense of smell also allowed them to sniff out birds that had disappeared from sight.

Sporting dog breeds include:
Cocker Spaniel
English Cocker Spaniel
Brittany Spaniel
Welsh Springer Spaniel
English Springer Spaniel
Golden Retriever
Labrador Retriever
German Pointer
Chesapeake Bay Retriever
Weimaraner
Vizsla
Irish Setter
Gordon Setter
English Setter.
Hounds
Although not technically part of the hunting dog category, several hounds are associated with the group. The Irish Wolfhound, the Borzoi, and the Elkhound have all been used for hunting in the past. The Saluki, the Greyhound, the Bloodhound, the Basset Hound and the Afghan Hound should also be included when discussing dog breeds with a hunting heritage.

These traditional hunting dogs still exhibit many of the traits that were bred into them years ago. If you adopt a sporting dog or a hound for a pet, you can observe how her behavior reflects her ancestry.

Hound dog breeds include:
Afghan Hound
Basenji
Basset Hound
Borzoi
Beagle
Coonhound
Bloodhound
Dachshund
Elkhound
Foxhound
Greyhound
Rhodesian Ridgeback
Saluki
Whippet
Wolfhound.
Tracking Dogs
For years, dogs and their keen senses have helped humans in a variety of tasks. Dogs have a unique ability to locate hidden items or people in need of rescuing.

Tracking dogs are still in use today for a variety of tasks. Their sense of smell and their visual acuity are important in police work and search and rescue teams. Because of their keen sense of smell, search teams often use dogs to help track missing people after avalanches and earthquakes to locate those that may be buried.

Dog breeds commonly used as tracking dogs include:
German Shepherd Dogs: These dogs are renowned not only for their excellent military and police work, but also for their valuable search-and-rescue capabilities.
Saint Bernards: This dog was bred to be an excellent mountain guide with the ability to find lost people on mountaintops. Members of this breed are very skilled at detecting forthcoming avalanches.
Rottweilers: These are best known today as guard dogs, but they are revered for their police work as well.
Newfoundlands: These dogs are now excellent household pets, but they were bred to rescue people from cold ocean water.
Dogs and Law Enforcement
For years, K-9 units have been used to support law officers. Special training is conducted to prepare them for a variety of tasks.

Bloodhounds are traditionally the dog of choice for K-9 tracking units, but many other types of dog are used today. Dobermans, for example, are renowned for their excellent guard dog skills, and are indispensable to police. German Shepherd Dogs, bred to be shepherding dogs, are valuable resources for police and the military with their extraordinary bomb-detection and tracking ability.

Dogs are used to sniff out contraband, especially in airports. Many officers also bring their K-9 units to classrooms when talking to children about drugs. They are trained to distinguish the scents of various drugs and other items, even when smugglers try to mask the odor of the drugs with interfering substances.

Dogs and the Physically Challenged
Dogs provide much help and security for people with physical challenges. With a good deal of training, dogs can become much more than just good friends. Their owners depend on them for assistance in various tasks, and they can make life easier and better for those who could use some extra help.

Hearing Impairment: With a little training, dogs can be taught to let their owner know when the doorbell is ringing, when a smoke or fire alarm is going off or even when someone is calling the owner's name.

Visual Impairment: Seeing eye dogs or guard dogs act as the eyes of their owners by skillfully guiding them in public places and at home. Usually, the seeing eye dog is a German Shepherd Dog, Labrador Retriever or Golden Retriever.

Mobility Impairment: Dogs assist people with mobility impairments by pulling a wheelchair, picking up dropped objects, opening doors and operating light switches. They can even call 911 and 999

Seizure Alert Dogs: These special dogs help people with diseases such as epilepsy by predicting when a seizure will occur. Scientists think that these dogs may smell a change in a person's body chemistry that occurs right before the seizure. Recent studies have revealed that dogs can be trained to detect specific scents in people with a range of medical conditions.