Environmental factors that can influence eye color in Labrador Retrievers are additional factors to genetics.

Certain environmental factors can play a role in influencing the expression of eye color.

While these factors may not directly alter the genetic makeup of a Labrador’s eyes, they can affect pigmentation and contribute to variations in eye color.

Environmental factors that can influence Labrador eye color



Nutrition plays a crucial role in a dog’s overall health, and it can also impact eye color.

A diet rich in specific nutrients, such as omega-3 fatty acids, may promote healthy eye development and potentially enhance or intensify eye color.

While it won’t change the genetic makeup of eye color, a well-balanced diet can support optimal eye health and potentially enhance the appearance of eye color.

Sunlight Exposure

Sunlight exposure can affect the pigmentation in a dog’s eyes, particularly in puppies.

The intensity and duration of sunlight can stimulate the production of melanin, the pigment responsible for eye color.

Prolonged exposure to sunlight, especially in light-colored or blue-eyed Labrador Retrievers, may lead to increased pigmentation, causing their eyes to darken over time.


Eye color in Labrador Retrievers change as they mature.

Puppies are often born with blue or gray eyes, which may gradually change to their final adult color within a few months. The transformation occurs as the pigmentation in the iris develops fully.

However, it’s important to note that not all puppies with blue eyes will transition to brown or amber eyes; some may retain their blue eye color throughout adulthood.

Health and Eye Conditions

Certain health conditions or eye disorders can affect eye color in Labrador Retrievers.

For instance, inflammation, injury, or underlying eye diseases can cause changes in the appearance of the iris or alter the pigmentation.

It’s crucial to monitor any abnormalities or changes in eye color alongside other symptoms to ensure the overall eye health of your Labrador Retriever.

While environmental factors can contribute to variations in eye color, it’s essential to remember that genetics remain the primary determinant. The interplay between genetic factors and environmental influences creates the unique eye colors observed in Labradors.

The different genetic mutations that can cause Labrador Retrievers to have blue eyes

Labrador Retrievers are known for their typically brown or amber eye color, but occasionally, they can exhibit blue eyes.

While blue eyes are more commonly found in certain dog breeds, such as the Siberian Husky or Australian Shepherd, some Labrador Retrievers can also have this striking eye color.

Blue eyes in Labrador Retrievers is often associated with specific genetic mutations

Dilution Gene

The dilution gene, often represented by the symbol “d,” can influence the color of a Labrador’s coat as well as their eye color.

When a Labrador carries two copies of the dilution gene (dd), it can dilute the pigmentation in their coat and eyes, resulting in a lighter shade of blue eye color.

Merle Gene

The merle gene, represented by the symbol “M,” is responsible for the merle coat pattern commonly seen in breeds like the Australian Shepherd.

In some cases, when a Labrador Retriever carries the merle gene, it can affect their eye pigmentation, leading to blue or partially blue eyes.


Heterochromia is a genetic condition where an individual has two different-colored eyes.

While relatively rare in Labrador Retrievers, it can manifest as blue eyes paired with a different-colored eye, such as brown or amber. Heterochromia can occur due to variations in pigmentation during eye development, which may be influenced by specific genetic factors.

Blue eyes in Labradors

It’s important to note that while these genetic mutations can cause blue eyes in Labrador Retrievers, they may not be as prevalent or predictable as in breeds specifically known for blue eyes.

The occurrence of blue eyes in Labradors is generally less common and often associated with other factors such as the dog’s individual genetic makeup and heritage.

Understanding the interplay between genetic mutations and environmental factors can provide insights into the occurrence and variability of eye color in Labrador Retrievers.

However, it’s crucial to embrace the uniqueness and individuality of each Labrador, regardless of their eye color, and prioritize their overall well-being and health.