Lentigo
freckles are genetic. pigments of skin are darker where the spots are
lesions
There are several reasons why a dog may develop spots on its skin, including allergies, infections, parasites, or hormonal imbalances. It is important to consult with a veterinarian to determine the underlying cause and appropriate treatment for your dog's skin condition.
Carotenes are yellow-orange pigments produced only by plants. Normally they have nothing to do with skin color. But if consumed in overabundance they can produce a condition termed as carotenodermia, where the yellowing of the skin can occur.
There are many skin condition causes white spots like vitiligo, Albinism, Nevus depigmentosus, Pityriasis Alba, White scars and hypopigmentation and Idiopathic guttate hypomelanosis
Big spots in the ears may be a skin condition of some kind. It is best to see a doctor who will evaluate and determine the cause and treatment of these spots. If a specialist is needed, you will be referred by your physician.
pigments
Pigment spots in a chromatograph can vary in size due to differences in the molecular weight and polarity of the pigments. Higher molecular weight and less polar pigments tend to travel slower and show up as larger spots, while lower molecular weight and more polar pigments travel faster and appear as smaller spots on the chromatograph.
The distinctive spots on a ladybug's shell are caused by pigments in their exoskeleton. These pigments are produced by special cells called chromatophores, which give the ladybug its unique coloration and patterns.
The black spots on your dog's anus could be caused by pigmentation, skin irritation, or a medical condition. It is best to consult a veterinarian for a proper diagnosis and treatment.
There are many skin conditions which causes white spots. Most common in which is the skin condition Vitiligo. And other are Albinism, Nevus de pigmentosus, Pityriasis Alba, White scars and hypo pigmentation and Idiopathic guttate hypomelanosis. Color of our skin is called skin pigment, and the process of coloration of skin is called pigmentation. When a loss of pigmentation occurs in certain part of skin, a white spots appear in that part.
Melanin and carotene are skin pigments that help block damaging rays from the sun. The more of these pigments in the skin the greater the protection.