Why Are My Dogs Balls Black?

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Key Takeaways

  • Dogs' balls can be black for various reasons, including genetics, infections, skin conditions, diseases, injuries, or due to old age.
  • It’s not always an issue, but some signs to be worried about if a dog's balls are black include excessive licking, swelling, red or pinkish coloring, and trouble urinating.
  • Dogs are often supposed to have black balls, and there is nothing wrong causing the problem. It’s due to the pigmentation in the dog’s genetics and is not a health issue.

For the dog owners who skip over neutering, it’s not uncommon to ask why a dog's balls are black because it happens often.

A dog's balls can be black because of genetics, infections, skin conditions, diseases, injuries, or due to old age. It’s not always a reason for concern, and it’s natural for this to happen in many cases. We recommend visiting the vet if the dog shows any signs of discomfort.

There is no scientific explanation for why some dogs have black balls and others don't. It is believed that genetics could be the reason behind this variation in colors. We will explain what we know about why this happens and what dog owners can do to be prepared.

In this article

Why Are My Dogs Balls Black?

It is not unusual for a dog's testicles to be black. This is because the scrotum, the sac that holds the testicles, is typically darker than the rest of the dog's skin.

The testicles themselves are also usually a darker color than the surrounding tissue. In most cases, there is no cause for concern if a dog's testicles are black.

However, if we notice any changes in the size or shape of the dog's testicles or if the dog is experiencing discomfort in that area, we need to contact a veterinarian for further evaluation.

Dogs' balls can appear black for a variety of reasons. One possible explanation is that the fur on the testicles is dark, which can make the balls appear black.

Another possible reason is that the balls are dirty, which can also make them appear black. It's also possible that the balls are healthy but simply appear black due to the lighting or other factors.

We’ll explain a few reasons why this happens in detail to help dog owners understand whether this is a cause for concern.


First of all, not all dogs necessarily have a problem if they have black balls. It could be genetics and how they are born, so there is no reason to panic immediately.

Typically, a dog’s balls will be visible around the eight-week mark, and one of the common colors is black or dark brown. The pigmentation of the skin in their genetic makeup will determine the color of their testicles.

Infection Or Skin Condition

Black balls on a dog can also indicate a skin condition or infection. One way to stop a skin condition is to look for any peeling around the skin.

When this happens, it means something is likely wrong. The skin condition also leads to excessive licking in this area.

The black color of the testicles could also signify a serious underlying health issue, such as testicular cancer in more severe cases. Other potential diseases include epididymitis or orchitis.

It's essential to have a dog evaluated by a veterinarian so that any underlying health issue can be diagnosed and treated as soon as possible.


If a dog's testicles have turned black, it can also be due to a severe injury or physical trauma. It is essential to take the dog to a veterinarian as soon as possible to determine the cause of the discoloration and to receive appropriate treatment.

The veterinarian will be able to determine the cause of the discoloration and recommend the best course of action for treating the injury or trauma.

Old Age

Another reason a dog’s balls may turn black is old age. It’s common for this to happen because dogs get older and produce more melanin, causing their pigmentation to change.

When this happens, it can result in discoloration in some areas like this.

Are Dogs Balls Supposed To Be Black?

Dogs, like many other animals, have a variety of colors and patterns in their fur, and the same is true for their genitals. The color of a dog's balls is not determined by any specific breed but rather by the pigmentation in their genetics.

It is expected, in many cases, for a male dog's testicles to be black. The color is because of varying levels of melanin in the skin of the scrotum, which is the sac of skin that holds the testicles. This is true for most male dogs, regardless of their breed or size.

The black color of a male dog's testicles is not a cause for concern and is not a sign of any underlying health problem. It is perfectly normal for a male dog's testicles to be black.

In general, the color of a dog's balls can range from pink to black and everything in between. Some dogs may have balls that are similar to their fur, while others may have balls that are entirely different.

Ultimately, the color of a dog's balls is not something that is considered to be important for their health or well-being. There are rare cases when the black color is a significant cause for concern related to their health.

What Should You Do If Your Dogs' Balls Are Black?

In many cases, it’s normal for a dog’s balls to turn or look black. It is rarely a cause for concern, but dog owners tend to worry, so we recommend bathing them, visiting the vet for advice, and improving their grooming routine.

Give The Dog A Bath

The black color may be caused by dirt or a dog rolling around outdoors and getting messy. We recommend bathing them as a first step to see if that helps clean them off or soothes the issue.

Visit The Vet For Advice

If the dog is struggling with discomfort, we recommend visiting the vet immediately for advice. They can help with a proper diagnosis to see whether this is a severe health condition or something minor.

Signs You Should Be Worried If Your Dogs Balls Are Black

It's not always a reason to worry because, in some cases, it’s normal for a dog's testicles to be black. However, this isn't always true, and some indications a dog owner should be worried about includes excessive licking, swelling, red or pinkish coloring, and problems urinating.

Excessive Licking

If a dog excessively licks their balls or scrotum area and is black, it could be a sign something is wrong. This is a reason to see a vet to get a diagnosis.


Another way to tell if the black color is problematic is if there is any swelling. This typically indicates some type of injury or trauma occurred.

Red Or Pinkish Coloring In The Area

When there is a red or pinkish coloring in the area, too, this means inflammation occurs due to a skin infection. This needs to be treated immediately to relieve some of the discomfort for the dog.

Trouble Urinating

Lastly, a sign something is wrong is when a dog struggles or has trouble urinating. This is an obvious sign to get them checked to treat the problem.