Dog Kidney Disease: Biscuit's Journey to Better Dog Health

When dogs start to show early signs of kidney disease, immediate action can drastically change their health trajectory.

Last week, I ran into my neighbor, Tom, while walking Pixie and Bruno. He was sitting on his porch with his senior beagle, Biscuit, looking a little more worried than usual.

“She’s been drinking so much water lately,” he said. “And she’s not eating like she used to.”

My heart sank. I had a feeling where this conversation was going.

The vet had just diagnosed Biscuit with dog kidney disease. And Tom was trying to wrap his head around what that meant. “Can dogs recover from kidney disease? What should I feed her?” he asked, flipping through a handful of pamphlets and printed-off pages.

Kidney disease sounds worrisome. But with early detection and proper care, many dogs can still live happy, whole lives.

In this post, I'd like us to discuss the early signs of kidney disease in dogs, the best diet for dogs with kidney disease, and how the right nutrition can make all the difference.

What Is Dog Kidney Disease?

The kidneys do a lot more for the body than you may realize. They filter waste, balance fluids, and prevent certain nutrients from over-accumulating in tissues, where they can cause more harm than good.

When kidneys stop working, toxins build up quickly in the bloodstream.

There are two main types of kidney disease:

• Acute kidney disease happens suddenly, often due to toxins, infections, or dehydration. With quick treatment, dogs can recover.
• Chronic kidney disease (CKD) develops over time, usually in older dogs. It’s not curable. But it can be managed with the right diet and care.

The term "kidney failure" (renal failure) means that the disease has progressed to the point that the kidneys can't do their job properly. It's more likely to happen suddenly. Once this happens, toxins will slowly (or rapidly, if severe) build-up.

Early Signs of Kidney Disease in Dogs

Kidney disease often starts quietly. So it’s important to catch it early. If your dog is showing any of these symptoms, an immediate vet visit is a good idea:

• Drinking more water than usual
• Frequent urination (sometimes accidents in the house)
• Loss of appetite or weight loss
• Lethargy (less energy, sleeping more)
• Bad breath (sometimes described as “ammonia-like”)
• Vomiting or nausea
• Dull coat or dry skin

It's important to note some overlap with diabetes signs. While both are serious, kidney disease is always an emergency situation. Kidney failure can kill a dog or cat within 2-3 days. Diabetes usually takes longer—several months, sometimes years, if untreated.

The key distinction to make here is that dogs with kidney disease may stop eating suddenly or slowly, while diabetes typically increases their appetite. Their breath smells ammonia-y, not sweet. Vomiting and dull coats are also not signs of diabetes.

If caught early, kidney disease in dogs can be managed with lifestyle changes, diet, and supportive care.

Can Dogs Recover from Kidney Disease?

It depends. When kidney disease is caused by infection or exposure to a toxic substance/ food, treating the cause can restore function and give the kidneys a chance to heal.

Chronic kidney disease is a progressively worsening condition. You can slow it down.

But you can't cure it.

The Best Diet for Dogs with Kidney Disease

A kidney-friendly diet for dogs is one of the best ways to manage this condition at home. The goal is to reduce kidney stress while keeping your dog happy and well-fed.

1. Renal Support Dog Food

Your vet may recommend that you switch to renal care dog food. These kibbles are formulated to reduce certain nutrients that cause kidney issues and may also have added ingredients to support better kidney function.

2. Avoid Highly Processed Treats

Highly processed treats often have added sugar, salt, and chemical colors/flavors. These aren't great for a dog with healthy kidneys, let alone one that can't eliminate toxins.

Choose single-ingredient dog treats with no artificial substances or added sugar.

Tom realized he'd been giving Biscuit quite a few highly processed dog treats. He had no idea they could cause her harm.

3. Reduce Phosphorus Intake

High phosphorus levels speed up kidney damage. Foods that are naturally lower in phosphorus, like grass-fed meats and low-phosphorus vegetables, can help.

For example, carrots and asparagus are low in phosphorus.

4. Reduce Potassium

Potassium is another nutrient that dogs with kidney disease struggle with. So avoid potatoes and canteloupe. This includes sweet potatoes, which I otherwise recommend because they're generally good for digestive health.

5. Moderate Protein – But Choose High-Quality Sources

Protein is essential. But it should come from high-quality, minimally processed sources.

Instead of dog treats filled with by-product protein sources, look for single-ingredient treats like K9 Connoisseur’s beef lung bites.

These provide protein without overloading the kidneys. Make sure to double check with your veterinarian on the appropriate amount to give your pup.

6. Increase Omega-3 Fatty Acids

Omega-3s help reduce inflammation and protect kidney function. Good sources include:

• Fish
• Fish oil
• Flaxseed
• Grass fed beef trachea chews. (Grass-fed = 2.5X the omega 3 of grain fed beef)

7. Keep Hydration High

Dogs with kidney disease drink more for a reason. They need extra fluids to help flush out toxins using less efficient kidneys. Adding moisture to their meals—like bone broth or fresh, water-rich foods—can support kidney function.

I regularly serve a portion of kibble in water as a meal to make sure my dogs stay hydrated.

8. Keep Them Moving

Regular exercise, even in short spurts can help the body process toxins by improving circulation. Keep an eye out for dehydration though. Short, low-impact walks or light play time is best.

To learn ways to keep your dog active and engaged regardless of their dog health challenges, sign up the Free 7-Day Dog Training Challenge. Our whole neighborhood has signed up. We're in it to win it! Better dog health and happiness—count me in.

Why Natural Dog Treats Help with Kidney Health and Dog Health

When you’re caring for a dog with kidney disease, every bite matters. The right treats can help keep them happy, engaged, and nourished—without overloading their kidneys.

• Beef trachea chews are a great alternative to bones. They’re lower in phosphorus and naturally packed with glucosamine and chondroitin, which support joint health—something every senior pup like Biscuit can appreciate.
• Single-ingredient treats (like beef lung bites) skip the artificial junk—no preservatives, no fillers, no extra salt. Just simple, natural nutrition that’s easier on the kidneys.
• Long-lasting chews help keep dogs engaged, especially when their appetite fluctuates. A little extra mental stimulation can go a long way in keeping them feeling good.
• Dog bones contain phosphorus, so they should be given in very small amounts—and only if your vet gives the green light.
• Each meaty dog bone contains around 20% protein, but since protein intake should be moderated for kidney health, it’s important to focus on high-quality, minimally processed sources like beef lung bites.

I want to re-emphasize the importance of veterinary care for a dog with you at this time. I'm not saying that diet alone manages kidney disease. Please consult with your dog's doctor about what's best for them.

The Bottom Line: Dog Kidney Disease Isn't a Death Sentence

When Tom realized that Biscuit's condition was manageable with diet and veterinary care, he was so relieved. Single ingredient dog treats and more watered food would become an important part of his renal disease management strategy.

The best diet for dogs with kidney disease focuses on minimally-processed dog nutrition and limits certain nutrients that can give kidneys problems.

Single-ingredient dog treats like beef trachea chews can help you help your dog manage kidney disease and live a fulfilling life.

Biscuit? A month into her kidney-friendly diet, she was back to wagging her tail and enjoying her walks. And Tom? He now keeps a stash of beef lung treats on hand—because even senior dogs deserve a delicious, healthy reward.

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