Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Cat Urinary System: Vet-Verified Health Guide (With Diagram)

Share

cat coming out of a litter box

Cats’ urinary systems remove waste products, ensure proper electrolyte balance, and help with vitamin D processing. The urinary system has several organs, including the kidneys, bladder, urethra, and ureters, which run from the bladder to the kidneys.

The urethra is the tube through which urine leaves the body. Kidneys help remove waste from cats’ bodies and contribute to the maintenance of electrolyte and mineral balance. They also make the hormones and enzymes required to maintain blood pressure and produce red blood cells. The bladder holds urine until it’s released through the urethra.

divider 2 cats

Feline Kidney and Bladder Anatomy

The kidneys are composed of the medulla, renal pelvis, and nephrons. A cat’s bladder anatomy is relatively simple; each has an apex, body, neck, and a series of muscles that allow cats to hold and release urine.

Male-vs-Female-Cat-Urinary-System
You are free to use this image but we do require you to link back to Catster.com for credit

divider cat paws 2 oct 2024

Common Urinary System Health Issues

Cats can suffer from infections almost anywhere in their urinary systems. They can also develop urethral blockages, which are emergency situations that can make it impossible for them to urinate.

Disorders such as amyloidosis and polycystic kidney disease can create severe kidney problems, and cats can be born with bladder, kidney, and urethral deformities. They can also develop conditions such as chronic kidney disease, as well as cancerous and benign tumors.

divider 1 paws

Ways to Support Feline Urinary System Health

Pet parents can take several steps to support their companions’ urinary system health, including ensuring they drink enough water, exercise, stay at appropriate weights, and have squeaky-clean litter boxes.

Hydration

Cats often drink less water than they should for their modern diet, which is hazardous to their health, and ensuring they stay properly hydrated is incredibly important for maintaining healthy urinary systems. Cat fountains can encourage drinking, and wet food is an easy (and tasty) way to boost their hydration.

Weight Management

Obese cats may be at increased risk of developing certain urinary system conditions. Ensuring they stay at appropriate weights is one of the most important things pet parents can do to support their companions’ health.

Ensuring your cat doesn’t gain too much weight is far easier than getting them to drop a few pounds. Most cat food comes with handy feeding information on the package that you can use to determine how much their cats should consume. However, you can also consult a veterinarian for feeding tips and brand recommendations.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

Stress Management

Stress can play a role in the development of urinary problems, and ensuring your cat has a comfortable environment where their needs are met and doing everything possible to minimize stressful events are vital to supporting their mental health.

Cats thrive when they have activities and toys to keep them engaged and entertained. You can buy several toys, including interactive products and food puzzles, that provide mental stimulation and physical activity. Interactive toys can keep your cat happy when you’re away, and plush toys or teasers are ideal when you can engage with them.

They also benefit from having scratchers to keep their claws healthy and high perches to survey their territory. Sticking with routines and providing enough time to adjust to new foods, schedules, and pets makes it easier for them to acclimate to changes.

Litter Box Management

Cats prefer to have clean litter boxes, and daily scooping is essential for their happiness and health. Setting up litter boxes in places where they can’t relax, such as busy hallways or locations where other pets can interrupt them, can make going to the bathroom a less-than-pleasant experience.

When your cat is unhappy with the condition or location of their litter box, they may avoid going to the bathroom as often as they should, which is harmful to their urinary system.

Did you know there's an enzyme cleaner that does it all? The Hepper Advanced Bio-Enzyme Pet Stain & Odor Eliminator Spray permanently removes the very worst smells and stains (truly, everything you can imagine!), and they offer a 100% satisfaction guarantee! Click here to get yourself a bottle.

Hepper Advanced Bio-Enzyme Pet Stain & Odor Eliminator Spray
  • ADVANCED ENZYMATIC CLEANER - Penetrates the most stubborn smells and stains at the deepest molecular...
  • FOR ANY MESS, ON ANY SURFACE - This pet odor eliminator cleans your carpets, floors, furniture,...
  • FRESH, NATURAL ODOR - Our unique formulation doesn't rely on dangerous or unpleasant chemical...

At Catster, we’ve admired Hepper for many years, and decided to take a controlling ownership interest so that we could benefit from the outstanding products of this cool cat company!

divider 2 cats

Frequently Asked Questions (FAQ)

How Do Cats Pee?

Ureters bring urine from the kidneys to the bladder, which stays relaxed until it’s full. When it’s time for a cat to urinate, their bladder wall contracts and their urethral sphincter muscle relaxes to allow urine to leave the body.

Is Spraying the Same as Peeing?

Cats spray to mark their territories, not to relieve themselves. They do so standing up, while most pee squatting.

cat spraying the bush
Image Credit: Helen Liam, Shutterstock

divider cat paws 2 oct 2024

Conclusion

A cat’s urinary system consists of two kidneys and ureters, a bladder, and a urethra. The kidneys filter waste from the body and are essential for maintaining proper electrolyte balance.

Hormones and enzymes made by the kidneys also play critical roles in red blood cell development and blood pressure regulation. If your cat’s litter box habits change suddenly or you notice other troubling signs, contact a veterinarian to ensure they’re not suffering from an illness or behavioral condition.


Featured Image Credit: Natasha Zakharova, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Chatting About Fake News in the Pet World, AI Again, and New Age Journalism | Chatty Cattys, Episode 23

Navigating the modern digital landscape requires a sharp eye to distinguish fact from fiction. In this episode of Catster’s podcast, Chatty Cattys, Nicole...

The Surprisingly Sweet Reason Behind Cats Chewing Human Hair (and Others)

Cats have a talent for turning the ordinary into something slightly bizarre. One minute, there’s a peaceful evening on the couch, and the...

Could This 19th-Century Technology Save Raw Pet Food? How E-Beams Are Changing the Industry

One of the most important developments in the pet food industry over the last century was the ability to create meals that were...

Why 2026 Is Being Called the “Year of the Cat”

Cats Are Finally Getting the Attention They Deserve Cats are having a major cultural moment, and the numbers help explain why. According to...

More related

Can Cats Drink Mineral Water? Vet Approved Nutrition Advice

Just like how you require water, your cat also needs water to survive. If you prefer drinking mineral water and wonder if you...

Cat Asthma: Vet Reviewed Signs, Life Expectancy, & Treatment

Asthma isn’t just a human disease; it can affect our pets too. In fact, it affects between 1% and 5% of cats. It’s...

10 Best Halloween Cat Toys of 2026 – Reviews & Top Picks

Halloween can be a fun time of year, but we often overlook our kitties. While cats may not understand the concept of a...

Why Do Cat’s Tails Puff Up? 4 Vet-Approved Reasons

Cats often puff their tails as a form of body language communication. It’s technically called piloerection! Felines use body language to communicate with...

Keep reading

Can Cats Eat Hemp Seeds? Vet-Reviewed Facts & FAQ

Cats like to explore their surroundings, and their adventures often lead them to foods and items they should avoid. With cannabis products becoming more available in the United States, pet parents may be concerned that hemp-related substances are toxic or...

Can Cats Eat Hemp Seeds

Does a Cat Scratcher Sharpen or Dull Nails? Vet Approved Tips & FAQ

A cat scratcher provides felines with a safe way to engage in their usual scratching behavior, which helps them maintain the health of their claws. It enables them to remove the outer sheaths of their claws, which need to be...

Cute cat sharpening claws on scratching post

Pica in Cats: Vet-Verified Signs, Causes & Tips for Managing This Eating Disorder

Most people know that dogs will chew on household items if given the chance, especially as puppies. Cats can also be chewers, but usually not to the same extent. However, if your cat seems to be fixated on chewing, sucking...

cat-biting-blanket

Why Do Cats Hang Out in Weird Places? 4 Vet-Reviewed Reasons

Does your cat enjoy sleeping on your head? Perhaps they like snuggling up inside your favorite vase? Or maybe you can’t wash your hands in the bathroom because your cat is hanging out in the sink? Cats do seem to...

cat hanging out in the bathroom sink

Can Cats Eat Durian? Vet Approved Facts & FAQ

Unless you’re a fan of cooking shows or love learning about unusual foods, you might not be familiar with durian, an unusual tropical fruit. If you have heard of it, you’re most likely aware that this food is famous for...

Can Cats Eat Durian

Your Cat’s Red Butt Has Entered the Chat (And Your Face)

Your cat demands attention in the most dramatic way possible: tail straight up in the air, rear end directly in your face. It’s a classic feline power move. But this time, something looks off. The area around their anus is...

woman looking at cat's butt

How to Care for a Cat with FIV: 8 Vet-Verified Tips for Better Feline Care

Although an incurable disease, feline immunodeficiency virus (FIV) doesn’t automatically mean a cat is doomed to a short life. This common infectious disease impacts a cat’s immune system, making them more vulnerable to illness and infection. However, cats with FIV...

cat being observed by a female veterinarian

Can Cats Eat Mint? Vet-Verified Facts & Advice

The mint genus is a broad category of plants containing multiple species that cats will react to differently. If you’re confused about the difference between catnip and catmint or catmint and wild mint, you’ve come to the right place as...

Can Cats Eat Mint

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.