chihuahua health and nutrition

Chihuahua Color Changes

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There are several reasons why a dog color change may happen, Some happen due to the dog maturing, some due to health conditions, and some are due to environmental elements.

In this article we will discuss :

  • The reason why a coat may change color.
  • what is the meaning of the skin turning into a different color?
  • what are the causes behind a chihuahua’s nose developing colored spots?

Skin color changes

For some dogs the skin is turning black, with some, it is turning dark brown. However, in all cases, the skin will become darker. For some chihuahuas with a light-colored coat, the change may be noticeable, also for all dogs, the change will occur on the stomach which has little to no fur over most of it.

Reason 1 :


Sun exposure is the main likely reason, because of the sun the skin is turning bright pink or red and be sensitive to touch, but, when the chihuahua is exposed to UV rays daily, the skin develops brown or black spots. The process is named “hyper-pigmentation”.

A lot of breeds love the sun. Some of them enjoy soaking in the sun’s rays, some lay belly up outside on warm summer days, and some will seek out a sunny spot in the house.

To make sure that the pigmentation is the main reason why your chihuahua’s skin color changes, the color lessens or completely goes back to its normal pink during winter months when the sun is not strong and the days are shorter.

If the skin is flat and there is a lack of signs or symptoms other than the color change, this is not a health concern and it is not dangerous.

4 main medical reasons

There are some health issues and skin issues that will lead to the color change and can cause a dog’s normally white to pinkish skin to be black. Their health and skin issues will be accompanied by some physical signs that tell us that something is wrong.

Here are 4 health issues:

1. allergies:

Symptoms are scaling pink irritated areas, rashes. But in some cases, chiefly if the owner did not treat his chihuahua early-the skin may turn purple.

There are also some signs such as itching, coughing, vomiting, shortness of breath, runny eyes, runny nose wheezing, and sneezing. The signs vary depending on if the allergy is a contact, inhaled, or food allergy.

2. vasculitis:

It is an inflammation of blood vessels, this issue is caused by a lot of reasons, the main is a bad reaction to vaccination shots. In some cases, the skin will have reddish-purple spots. Other signs of this issue are: swelling in the legs, itchy skin, painful areas on the body such as paws, lips, tail, and lack of appetite and fever.

3. Hypothyroidism:

The cause of this issue is when the dog’s thyroid gland not properly producing hormone levels. At the beginning of this issue, the color may not change. However, if the owner did not treat the issue the skin may change its color to black. This issue has other symptoms as well, like dry skin, weight, and thinning of the coat.

4. sweat gland cysts:

when sweat glands are inflamed, there will be black raised nodules. It does not only turn color but also the affected area raised.

The reasons that we have discussed are the top 4. However, there are some other reasons that are rare such as Bowen disease, yeast infections, infection, parasites, and cancer.

How to be sure that black skin is normal or not.

If there are no raised areas, itching, fur loss, discomfort. The cause of the black color is just exposure to the sun.

If there are any other signs. Such as unusual as they may seem, you have to visit your vet for an evaluation.

Nose color change.

There are 3 main reasons for this

1. change of the season:

In the winter black may turn brown, chocolate may turn pink, some people call this snow or winter nose. There are two reasons for this reaction, shorter days of less sunshine and it is the response of the tyrosinase enzyme which produces nose pigmentation.

2. Genetics:

A puppy may have one color on his nose and as he or she becomes an adult the color of the nose may change.

3. Medical issues:

They are very rare, cancer and lupus Erythematosus are possible causes. for example with lupus, there will be other symptoms such as crusting, swelling, and scaling.

Should nose color change should take your intention?

The reason will be due to seasonal color changes or genetics. If there is a lack of some symptoms like cracking, raised areas, change in appetite, skin problems, etc. Consult your vet if you have any doubts.

Coat color changes

Chihuahua’s fur color change is something normal. Some puppies are born with one color and will have a chance to another color as they become adults. Mostly, this happens in their first year. For some, there will continue to be subtle changes until the age of 18 months.

It is very hard to predict the final color of a chihuahua, as genetics is in charge. For example, a black and white puppy cannot mature into a brindled tan.

Also, there will be gray hairs intermingled with the hair as the chihuahua ages.



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