Why is My Dog’s Urine Foamy?

Dogs can conceal illness like a magician, and you’d be surprised at how good they are at it. 

To begin, urine, in general, contains certain proteins that can cause it to bubble even when there is no illness present. These proteins are responsible for bubbling. 

The bubbles, on the other hand, quickly disappear and become barely noticeable when this happens. 

Some illnesses, some more serious than others, can result in foamy urine, and some are more concerning than others. 

Most of the time, the underlying cause can be alleviated with simple medication provided by the veterinarian or uptake in water

I’ve included five reasons why foamy urine can occur, as well as what you can do to prevent it from helping you better understand why this happens.


5 Reasons Your Dog’s Urine is Foamy

1: Excess Protein

Urine contains a variety of different types of protein, which can cause the urine to become foamy. 

If this occurs only infrequently, it isn’t necessarily a negative development. 

However, if this happens consistently for more than a week, your dog may be suffering from a condition called proteinuria. 

This condition essentially means that the kidney is not filtering out certain proteins as effectively as it would in a healthy kidney.

2: Kidney Problems

In some dogs, particularly those that are older than seven years old, there is a slight increase in the likelihood of developing kidney problems. 

This can be caused by a variety of factors, including old age, kidney filtering issues, and the consumption of medications such as ibuprofen. 

Kidney problems are not something to be taken lightly, and as a result, I recommend that you consult your veterinarian regardless of what you suspect is causing the foamy urine.

In the meantime, make sure you maintain a very close eye on your dog, ensuring it does not show signs of kidney failure, such as discoloration of the gums.

3: Infections

Whenever a person becomes ill, the body eliminates bacteria through the lymph nodes, kidneys, and other organs and systems. The bacteria is excreted through the urine. 

This can cause the urine to appear darker than usual due to an excess of proteins and bacteria in the urine. 

The urine may become foamy as a result of this condition. 

There is presently no way to determine exactly what type of bacteria is causing the infection, but antibiotics are absolutely necessary in any case.

4: Dehydration

Dogs can become dehydrated much more quickly than humans, which is especially true during hot summer afternoons. 

When the body grows dehydrated, it attempts to retain as much water as possible to prevent further dehydration. 

As a result, your dog’s urine may become excessively dense with waste products as a result of this condition. Increasing your dog’s water intake may be the solution to this problem. 

Never, ever force your dog to drink excessive amounts of water, as this may result in sodium imbalances.

5: Poor Diet

Dogs, like humans, have a highly sensitive body when it comes to issues relating to their diet. A simple change in dog food can directly result in bowel problems in the animal. 

Furthermore, a poor diet that includes a variety of foods can wreak havoc on the entire digestive system, resulting in vitamin imbalances and other problems. 

A poor diet can cause foamy urine because the blood ultimately pays the price for the dog’s poor nutrition, which is recycled by extracting it through the urine.

What You Can Do To Help

1: Maintain Good Water Intake

It’s imperative to assure that your canine is getting plenty of water to stay healthy. It has been previously stated that dogs are prone to becoming dehydrated quickly. 

As a result, it is critical that dogs have access to cool, clean water at all times, regardless of the weather. When it’s been a long, hot day, foamy urine is more common. 

If your dog has foamy urine at night after drinking plenty of water, follow the instructions in step three below.

2: Fix Up its Diet

You should begin feeding your dog a nutritious diet immediately if you haven’t already done so. 

A proper diet would include both wet and dry food, such as the food prepared by JustForFoodDogs.com, as well as treats and toys. 

Diets high in fat, food coloring, or other unhealthy ingredients can result in foamy urine. 

This includes foods such as cooked hamburger meat, french fries, and various other types of human nutrition.

3: Call Your Vet

Last but not least, if the problem does not improve within a week, contact your veterinarian. 

The majority of cases are likely to be resolved with a single visit to the veterinarian, if at all. 

By performing a urinalysis, your veterinarian will be able to determine what is wrong with your pet very quickly, allowing him to pinpoint the problem and treat it as needed. 

Furthermore, he may explain how you can avoid this problem from recurring in the future.


We don’t want to see foamy urine when we take our dogs out to relieve themselves. Fortunately, the majority of the causes are easily remedied. 

Even though kidney problems can be dangerous, they can often be resolved with medication and instructions from your veterinarian. 

If your dog is acting sluggish and unwell, it’s critical that you take him to the veterinarian as soon as possible because certain kidney problems can’t be treated for several days.

Written by Brian Rucker

Brian Rucker has been a dog lover since childhood. He has had his Lab Mix with Hound for over 10+ years now! They enjoy playing outdoors together. Brian loves sharing his knowledge about all things dog on this website. Read more of Brian's articles.