White – The dog has difficulty hearing or seeing, or is completely blind/deaf. Purple – Don't feed anything to the dog.
When there is not enough oxygen being carried to the body by the red blood cells, the skin and mucous membranes (e.g., the gums) can turn a bluish color. This is known as cyanosis.
Petechiae are small red or purple spots that appear on the skin or mucous membranes, and they are caused by capillary bleeding. They can be a sign of a serious underlying condition, such as an infection or immune-mediated disorder.
Orange: No dogs. Blue: Training or working so do not disturb. White: Blind or deaf dog. Purple: Do not feed.
Genes do two things that determine a dog's appearance. They control the pigments produced (eumelanin and phaeomelanin) and where these pigments are produced. Genes rule by telling some cells to make eumelanin, others to make phaeomelanin, and still others to make no pigment whatsoever.
Hematomas. A term commonly used to refer to bruises, a hematoma is the result of trauma to a specific area of your dog's body. A lump may form in this area that is filled with blood.
Dogs who have been spayed or neutered may have a simple tattoo on their tummy. Called a sterilization indicator tattoo, this short straight line of blue or green ink indicates that the dog has had surgery to remove their reproductive organs.
Unhealthy coat's appearance: A dog with an unhealthy coat will have dry and brittle hair with lots of loose hair in the coat. The coat itself may also be greasy or have a dusty appearance and include bald spots and an unpleasant oily smell.
Purpura causes red, purple or brown blood spots on your skin. It happens when small blood vessels leak blood under your skin's surface. There are different types of purpura. Treatment for purpura depends on the underlying condition causing it.
Stress and Anxiety
Stress and anxiety could also be potential causes for your dog's hair turning white. While the reason is unknown, it is possible that stress somehow causes the body to stop producing pigment in the same manner as it used to.
Medications, sunlight, nutritional status and skin disease can all be factors in changing and dog's coat color. It might be that your puppies had different nutritional backgrounds and when they were brought together their nutritional and environmental influences matched.
An injury – If your dog has had surgery or a wound, you might notice some discoloration in their fur around that spot. It is common for the hair in the affected area to grow back darker as your dog's body sends extra melanin to that spot to help the area heal.
Veterinarians use small, straight-line tattoos when pets are spayed or neutered to let future caregivers know that this particular pet no longer has internal reproductive organs.
Pups are tattooed to help identify them in case they are lost or stolen. Microchips are great, but sometimes do not always work. They also tend to migrate which has some breeders wondering how safe they really are when they are implanted in the neck and found a year later in the rear leg.
Blue skin in dogs is a sign that your dog is poorly oxygenating — and not an early sign of decreased oxygen levels. Therefore, your vet will likely perform a quick initial physical exam, or your pet may be rushed to the back treatment area right away.
Like in humans, changes to existing lumps could be a sign of cancer. Look for changes in size, texture and colour, particularly if it becomes black or purple.
Most squamous cell carcinomas of the skin appear as firm, raised, and often ulcerated plaques and nodules. Tumors can often grow outward into large masses and have a surface that resembles a wart.
One of the best ways to identify a potentially cancerous lump is to evaluate how that tumor feels when touched. Compared to the soft, fatty characteristics of a lipoma, a cancerous lump will be harder and firm to the touch, appearing as a hard immovable lump on your dog.
Dogs mark to label their territory. Dogs may also mark to communicate anxiety or frustration. Triggers can include major changes in the household routine or environment, such as a new work schedule or a remodeling project. Some dogs, particularly males, repeatedly mark vertical surfaces when outside.
Flecked, ticked, speckled: This is when a dog has very small spots of one color mixed in with its main color. Brindle: This pattern is when a dog's coat is a mix of black with brown, tan, or gold. It sometimes makes a "tiger stripe" pattern. Saddle or blanket: When a dog has a large colored patch on its back.
Dogs have an amazing sense of smell, which allows them to recognize their own breed. This is because each dog's breed has a unique scent. Dogs also have a strong sense of sight, which allows them to see subtle differences in other dogs' appearance.
Yellow: Yellow ribbons or bandanas are typically used to indicate that a dog may be nervous, anxious, or in need of space.