Table of Contents
- What are Pigment Changes?
- How Do Tear Stains and Discoloration Occur?
- Overview of Causes of Pigmentation Disorders in Dogs
- Two Real Examples from the BugBell Community
- Why Food is Crucial
- Conclusion and Your Before/After
What are Pigment Changes in Dogs?
Perhaps you have noticed dark discolorations on your dog's rear, under their eyes, or around their mouth. These changes in coat pigment occur gradually and are often only noticed late – especially in dogs with light or white coat.
These are so-called secondary pigment accumulations, often caused by saliva, tear fluid, or other bodily secretions. Depending on predisposition, nutrition, and metabolism, they can intensify – or even recede.
Pigments – i.e., colorants in the body – are responsible for the coloration of coat, iris, nose, and lips. The intensity of the respective color largely depends on the melanin content in the so-called basal cells of the skin. This melanin content, in turn, is influenced by various factors – such as the content of carotenes or hemoglobin in the body. Hormones also play a central role: The melanocyte-stimulating hormone (MSH) and the adrenocorticotropic hormone (ACTH) significantly influence skin pigmentation. It's no wonder, then, that hormonal imbalances often go hand in hand with pigment changes.
How Do Tear Stains and Discoloration Occur in Dogs?
Discoloration in the tear ducts or anal area is not just a cosmetic problem – it can be an indication that the metabolism or immune system is under stress. Often, food intolerances or allergies play a central role.
Many industrial foods contain artificial colorings, sugar, flavor enhancers, or poorly digestible proteins that burden not only the digestive tract but also the skin and coat. Excess substances are excreted via tear fluid or saliva, for example – and leave visible traces there.
Overview of Causes of Pigmentation Disorders in Dogs
Hyperpigmentation (overpigmentation): Skin becomes darker in certain areas, e.g., due to chronic inflammation or allergies.
Hypopigmentation (underpigmentation): Skin or coat loses color – e.g., due to genetic causes, hormonal disorders, medications, or nutrient deficiencies.
coatther possible triggers:
- Congenital pigment disorder (e.g., vitiligo)
- Food intolerances and oversupply of synthetic additives
- Hormone-containing feed ingredients (e.g., poultry heads)
- Weak gut flora → poor nutrient absorption
- Autoimmune diseases or liver/kidney problems
Feeding-independent causes of pigment loss
Congenital Hypopigmentation (e.g., Vitiligo)
A congenital lack of pigment can affect the entire body – as in albinism – or manifest locally as white spots or loss of color, usually in the area of the nose or lips. This form of hypopigmentation is particularly common in breeds such as the German Shepherd or Doberman. Symptoms often only develop by the third year of life.
Pigment Loss due to Inflammation, Injuries, or Allergies
Damage to certain skin layers – for example, due to chronic inflammation or allergic reactions – can disrupt melanin formation and lead to local color changes.
Pigment Loss on Lips and Nose Mirror in Autoimmune Diseases
Autoimmune diseases cause the immune system to attack the body's own structures. Pigment-forming cells can be destroyed in the process – visible color loss on the lips and nose are possible consequences.
Hormonally Induced Pigment Loss
Hormonal disorders – such as suppressed heat, false pregnancy, uterine infections, or medical hormone treatments (e.g., cortisone, ACTH, thyroid preparations) – also affect melanin production. The disturbed hormonal balance can therefore directly affect pigmentation.
Medication-Induced Pigment Loss
Some medications – such as antibiotics, dewormers, or chemical flea treatments – can stress the metabolism and thus hinder the storage of melanin. In many cases, however, this effect is temporary and regulates itself within 4 to 6 weeks.
Disorders of the Intestinal Flora
If the gut flora is damaged by illness or stress, absorption disorders can occur. This means that vitamins and minerals are not properly absorbed in the intestine – even if they are sufficiently present in the food. This secondary deficiency can also manifest itself as pigment loss.
Feeding-Dependent Causes of Pigment Loss
Hormonally Active Components in Food
Certain foods containing hormonally active components such as poultry heads can disrupt the dog's hormone metabolism. These substances affect, among other things, MSH (melanocyte-stimulating hormone) and ACTH – which can impair pigment formation.
Poor Food Composition
Foods with an insufficient content of essential fatty acids or amino acids can inhibit melanin production.
Oversupply of Minerals and Trace Elements
An excess of minerals can overload the liver and kidneys and block the absorption of other important trace elements in the intestine. For example, too much calcium inhibits zinc absorption – which in turn can lead to a zinc deficiency. This is also a common cause of pigmentation disorders.
Two Real Examples of Pigmentation Disorders in Dogs
Example 1: Pigment Lightening on a Dog's Rear
A customer reported about her Chihuahua Alibaba, whose skin around the anus had darkened significantly and dark skin patches were visible on his tail. Over months, the region became increasingly pigmented, partly patchy – until the switch to BugBell HappyMood. After only 3 weeks, the skin was noticeably lighter and healthier. The coat density also increased again – a clear indication that the organism was relieved.
Example 3: Visible Change Around a Dog's Eyes
Another great example is Chico, a white Maltese, whose owner enthusiastically sent us two comparison pictures. Chico had long suffered from discolored tear stains, especially visible due to his light coat.
In March of this year, the discoloration was clearly visible – especially in the picture with the orange combination. The family then began to switch to our EnergyWonder Dry dog food line in combination with the dog biscuits.
Already after eight weeks, significant improvements were seen: the tear ducts were noticeably lighter, the coat around the eyes much clearer and cleaner. The owner herself wrote:
"I think you can see a clear difference around his eyes!"
Such results are no coincidence – they show how strong the connection is between nutrition, skin, and coat health. Especially for sensitive or allergic dogs, a targeted food choice can work wonders.
Why Food is Crucial
BugBell food is specially developed for dogs with sensitive digestion, intolerances, or allergies. Our recipes use few, but high-quality ingredients – without grains, without artificial additives, and with hypoallergenic insect protein.
Through this relief, the immune system can stabilize, and skin and coat often recover significantly. Pigment accumulations gradually break down – completely naturally and permanently. This is precisely why many pet natural health practitioners and veterinarians recommend our food as a holistic solution for skin and coat problems.
Discover food for sensitive dogs
Conclusion and Your Before/After
Whether dark rings under the eyes, brown saliva stains, or discoloration on the rear: You should take these signals seriously – because they show you that your dog needs support. With high-quality, natural food like BugBell, you can gently strengthen the immune system – and help your dog regain balance.
Have you already noticed any changes yourself? Then we would be thrilled if you would send us before-and-after pictures. Your example can encourage other dog owners!
