The Science Behind – How Long Do Puppies’ Eyes Stay Blue

Puppies are adorable creatures, and their blue eyes only add to their cuteness. This eye color is common among young pups. However, lots of people also ask, “How long do puppies eyes stay blue?” Eye color changes are an important part of a puppy’s growth. This article will explain why eyes change color, what causes the changes, and what to expect as your puppy develops. Whether you have had dogs before or this is your first pup, knowing about these changes will help you appreciate your pet’s development.

The Science Behind - How Long Do Puppies' Eyes Stay Blue

Introduction to Puppy Development

Most newborn pups usually have blue colored eyes, which is because they don’t have melanin yet, which brings color to our own eyes as well as those of dogs. Melanocytes produce melanin, which gives eye color to humans and dogs; for instance, when some puppies are born, there may be no pigmentation due to lack of complete development of melanocytes, hence resulting in having blue colors in their eyes only. Besides, not all puppies are born with blue-colored eyes nor will all those that have them retain this coloration into adulthood.

Why Do Puppies Have Blue Eyes?

Usually, puppies are born with blue eyes lacking melanin – the pigment-coloring human and dog eyes. Melanin production happens through melanocytes, cells responsible for eye color in humans and dogs. However, many newborn puppies lack fully developed melanocytes, preventing pigmentation and causing blue eyes. However, not all puppies are born blue-eyed at birth, and blue-eyed eyes don’t always remain permanent.

When Do Puppies’ Eye Color Change?

The eye color transition takes place between 6 and 16 weeks of puppies life. The age at which this transformation occurs varies depending on the breed of your dog. In some puppies, the process may take longer than others till their eyes have settled into the permanent color, for instance, up to sixteen weeks. However, others already possess their ultimate eye colors when they are only six weeks old; though it is not strange that changes continue to happen even until twelve weeks or longer. Nevertheless, it is important to understand that each puppy is different and the actual time frames for such an eye transformation vary.

How Does Eye Color Change?

At birth, pups have cerulean or blue-gray peepers, irrespective of breed or genetic makeup. As they mature, melanocytes start producing additional pigment, causing a gradual eye color transformation. This can span weeks to months, sometimes taking nine months for the pup’s new hue to emerge. During this phase, you may note different shades of blue, green, gray, or even brown in your puppy’s eyes as melanocytes continue to produce pigments. However, it’s worth mentioning that within breeds, eye pigmentation can still vary, meaning littermates may not share identical eye tones.

How Long Do Puppies’ Eyes Stay Blue?

The time period during which a puppy has blue eyes differs but usually changes after it reaches nine months. However, some dog breeds, like Huskies and Australian Shepherds, still maintain their blue eyes up to adulthood. In these cases, having blue-colored eyes does not indicate any health problems; hence, it should not be worried about at all. Please consult your veterinarian if you think something is wrong with your puppy’s eye color.

Factors Influencing Blue Eyes in Puppies

While most puppies are born with blue eyes, there are certain factors that can affect the color and duration of their blue eyes. These include:

  1. Genetics: Genetics determine canine eye color, akin to humans. Intriguingly, ce­rtain breeds like Australian Shepherds and Huskies exhibit highe­r blue-eye prope­nsity due to their unique ge­netic composition.
  2. Age: The age of a puppy can also affect how long its blue eyes will last. Younger dogs tend to possess bright bluish-colored pupils, while the older ones may be going through an iris color change period now that they are starting to outgrow them.
  3. Health and Nutritional Factors: Pup health and nutrition also influence the blue-eye intensity and duration. A robust, well-nourished pup likely boasts vibrant azure­ orbs compared to one with underlying ailments.
  4. Sun exposure: The sun’s ultraviolet rays can also affect Puppies’ eye pigmentation. Melanocytes get damaged if they are overexposed to the sun, leading to lighter or less intense respectively colors of an eye.
  5. Environmental Influences: Other environmental factors, such as temperature and climate, also play a major role in influencing the duration of blue eyes in puppies. Some breeds may experience a longer eye color transition period due to their natural habitat or living conditions.

To learn more about the sleep patterns of puppies and how you can ensure they’re getting enough rest, check out our guide on how long puppies sleep at night.

The Science Behind Blue Eyes in Puppies

While it may seem simple that puppies are born with blue eyes due to a lack of melanin, the science behind this phenomenon is much more complex. The gene responsible for determining eye colors in dogs is called E locus, and it has multiple variations, which can all result in different eye colors. Since these variations interact with other genes or environmental factors, predicting or controlling the color of the eyes in puppies can be very hard.

What to Do If Your Puppy’s Eyes Don’t Change Color

In rare cases, a puppy’s eyes may not change color from blue to brown or another expected shade. Genetic defects or hidden health issues may cause this unusual event. This issue is important and requires veterinary advice. Make an appointment with your vet if you notice this in your puppy. Vets can diagnose this anomaly by performing a thorough exam. A veterinarian can precisely diagnose the problem and offer a customized treatment plan. This proactive method protects your pet and detects health issues early.

Breeds and Their Eye Colors

Breeds with Blue Eyes Throughout Life

Certain dog breeds are famously known for retaining their striking blue eyes into adulthood, a trait that adds to their majestic and unique appearance. Notably:

  • Siberian Huskies: Perhaps the most well-known breed for keeping their blue eyes throughout life, Siberian Huskies can captivate anyone with their icy gaze. Their blue eyes are a hallmark of the breed and contribute significantly to their wolf-like appearance.
  • Australian Shepherds: Although Australian Shepherds can have eyes of varying colors, including green, brown, and even one of each color, pure blue eyes are a common and cherished feature in this breed.

Breeds with Common Eye Color Changes

While all puppies might start with blue eyes, the majority undergo a transition to darker shades as they mature. Some breeds known for this eye color shift include:

  • Labrador Retrievers: Known for their friendly nature, Labradors typically transition from blue to brown or hazel as they grow.
  • German Shepherds: Another popular breed, German Shepherds usually have their eye color change from blue to dark brown, aligning with their vigilant and noble demeanor.
  • Golden Retrievers: The warm, expressive eyes of a Golden Retriever often start as blue in puppyhood before deepening to shades of brown, reflecting their gentle and friendly personality.

Tips for Puppy Eye Color Transition Care

The eye color transition period can be challenging for puppies, and it is essential to provide them with proper care and attention during this stage. Here are some tips on how to care for your puppy during their eye color transition:

  1. Regular vet check-ups: Do not miss having your dog checked by a veterinary doctor whenever you notice that his/her eyes are changing their colors after birth. This would help identify any underlying illnesses early enough thereby facilitating immediate treatment.
  2. Gentle Eye Cleaning: Puppies may experience more eye discharge during this period, leading to a higher risk of infection. Regularly cleaning their eyes with a gentle, pet-safe solution can help prevent any issues. Avoid using harsh chemicals that could harm their delicate eyes.
  3. Proper nutrition: Good nutrition he­lps puppies grow properly, including their e­yes. Ask your vet which diet is best for your pup’s stage of life. Proper food supports overall health.
  4. Protect from sun exposure: Too much sun exposure can impact a puppy’s eye pigmentation. Make sure that your pup has shady spots to relax. Avoid leaving them in direct sunlight for long periods.
  5. Mental Stimulation: Mental stimulation is key while­ your pup’s eyes are changing color. This crucial stage­ impacts their overall deve­lopment. Engage them with inte­ractive toys, games, and training. Kee­ping their minds active ensure­s they grow up happy.
  6. Regular Exercise: Daily exercise­ supports your blue-eyed pup’s we­ll-being. Take them for walks, play fe­tch, and find other active games. Physical activity keeps puppies fit, both mentally and physically.


Blue eyes make puppies charming and win over dog lovers. Understanding that this particular characteristic is caused by genetics, environment, and breed is crucial. Some breeds always have blue eyes, whereas others change to darker colors. As good pet parents, we must care for puppies during this eye color transformation. By following the suggestions above and obtaining professional guidance when needed, you can help your pet grow into healthy adult dogs. Behold the beauty of blue-eyed puppies and watch their eyes change color.

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