Why Are My Dog’s Balls Black?

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In this article, you will know the answer to the query “Why Are My Dog’s Balls Black?“.

If you’re a responsible dog owner, you need to watch out for your pet’s health, including his balls. You need to make sure that nothing is amiss the moment you discover any change down there.

Why are my dog’s balls black? is one of the most common questions pet parents have. We’ll examine the many causes of your dog’s darker scrotum, but the short answer is that it’s most likely nothing serious.

What do healthy dog balls look like?

It is important to first consider what healthy dog balls look like to understand if there is a problem with your dog. A dog’s scrotum, which holds its testicles, varies in color from animal to animal.

The color of the scrotum should generally be grayish. In any case, the color of the tattoo depends on the level of skin pigmentation in the area. If the skin on your dog’s underbelly is dark, so will the scrotum be.

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Pinkish spots can also appear on the balls of many puppies, which is totally normal.

Your job as a pet owner is to keep track of the color of your dog’s balls, so you’ll notice if there’s anything different. Let’s take a closer look at what might be happening if your dog’s privates change color.

Why are my dog’s balls suddenly black?


Dogs’ scrotums become darker in color as they age. It is normal for a dog’s balls to become black as he matures due to increased levels of skin pigmentation. It occurs gradually, though. It’s reasonable that you don’t check your dog’s balls every single day. Who does that?

A few days later, you discover the dog’s balls turned black and you freak out when he lies on his back waiting for you to scratch his belly. There’s a good chance it didn’t happen overnight, it isn’t that they suddenly turned black, it’s just that you weren’t paying attention.

You may also notice black spots on a dog’s testicles as he ages, possibly many small ones or a few large ones.  Whatever the case, this is just another sign of pigmentation changes, and it is completely normal.

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Alternatively, if the color changes suddenly, you should check his scrotal area and monitor his behavior. This might indicate bruising if your dog’s balls suddenly turn dark blue or black. If the dog appears to have injuries such as scrapes, cuts, or punctures, then it may have been injured while playing or chasing another animal. Look for any signs that the dog is in pain by gently feeling the balls.

You should take your dog to the vet just to make sure it hasn’t hurt himself seriously if it seems like he has. You can, however, give it a day or two if he doesn’t seem in pain or bothered by the balls. It may take a while for the bruising to disappear and the scrotum to return to its usual color.

Why are my dog balls peeling?

Dog owners sometimes notice skin peeling around the balls when their dogs’ balls turn black. In most cases, this occurs when the dog is irritated. Often, the skin on his scrotum starts peeling because it becomes too dry.

Dogs with dry skin will often obsessively lick their privates in an effort to relieve the itching. Unfortunately, licking the skin only provides temporary relief, and it will become even more irritated.

After examining him, you may conclude that he has a dry skin issue that can be treated with coconut oil or Vaseline. Although both substances are non-toxic to dogs, oily substances can help with dry skin by locking moisture in.

Black balls after neutering

There are a lot of pet owners who complain that their dog’s balls appear swollen and black after neutering. In spite of a small incision to remove the dog’s testicles, it still means damage to a very sensitive skin.

It’s probably nothing to worry about if the dog’s scrotum appears very dark during the first few days after neutering. Look for signs of infection, like redness. Make sure your dog wears the cone the vet fitted him with, so he won’t lick his by now missing balls.

You can also expect swelling for a few days after surgery. The sack will make contact with the dog’s skin and become flat. When swelling does not disappear in a few days and the dog appears feverish (check his nose! ), he might have developed an infection after neutering, although such complications are rare.

Why are my dog’s balls red?

When your dog’s scrotum is red, you should take it seriously if you notice black balls. The dog’s balls turn red when they are infected. If the dog is intact, the infection could be the result of an injury or a problem with the balls themselves.

There could be a bladder infection spreading in the dog. Check to see if the dog urinates more often or seems to have trouble urinating. Instead of treating the infection yourself, you should see a veterinarian.

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Testicular torsion is one of the most common causes of red balls, which is not only painful but also dangerous. Testicular torsion occurs when one or both balls become twisted, causing irregular blood flow. They also appear swollen and tender.

Testicular torsion should be treated by a veterinarian as soon as possible. It is important to determine the cause, which can be a trauma to the scrotum or an infection called brucellosis.

Testicular torsion can also be caused by many other types of bacterial or fungal infections. Antibiotics will be given to your dog, while ice packs will be applied to reduce swelling.

If only one of the testicles is affected, the doctor might recommend removing it before the infection spreads.

Does cancer cause black balls in dogs?

Some pet owners wonder if this might be a sign of testicular cancer when their dog’s balls turn black. Hyperpigmentation, however, is only one possible sign. There are other early symptoms of testicular cancer as well: asymmetric testicles, penile atrophy, swelling of the prepuce, hair loss or brittle hair or changes in the way the dog urinates, such as squatting instead of raising a leg.

Check your dog’s testicles regularly if his testicles are intact. Look for a change in the way they feel to the touch as well as swelling. The dog cannot tell you if something is odd, so you need to take care of this.

Dogs’ balls are usually soft, like a grape. One or both might feel harder than the other, which could indicate cancer, and you should consult a vet. There might also be some swelling in the affected testicle, while the unaffected testicle shrinks.

In most cases, a dog’s cancer will be treated by castration immediately after a cancer diagnosis. The dog will only need chemotherapy or radiation therapy if cancer has spread.

Why does a neutered dog appear to have swollen balls when excited?

The empty sack of a neutered dog isn’t swollen since his testicles have been removed. Even castrated dogs can get excited, not necessarily sexually, and the mysterious bulbus glandis will swell. In contrast to its name, bulbus glandis, the structure at the base of the penis, is not a gland, it is an erectile tissue structure involved in mating.  It appears as two swollen bumps on either side of the penis when the dog gets excited, and since they’re close to the scrotum, this may confuse the owner.   

While we’re there, we should mention that neutered dogs can still have sex. In many cases, they lose much of their sexual urge after neutering, but occasionally they will become aroused when they meet a female in heat. 

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In some cases, the bulbus glandis may become obvious even if the dog is just really excited to see you and only wants a belly rub.


Your dog’s balls don’t need to be black just because you just found out. A change in color is usually caused by higher levels of skin pigmentation in an adult dog. Still, if the dog is licking himself like crazy and the skin on his scrotum is peeling, he may have a skin condition. Coconut oil or Vaseline can be applied to the wound, and if the condition doesn’t improve you should visit a veterinarian.

In any case, if the dog’s balls appear red, he might have an infection and should be checked out as soon as possible.

If you want to read more about dog health tips, read here: Dog Health Tips and Tricks.

Why Are My Dog’s Balls Black? (Watch Video)

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