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.

6 Surprising Facts About Cat Pee

cat-peeing-on-the-bed

Felines are obligate carnivores, consuming animal-based proteins for the bulk of their diet. That’s significant because it plays a direct role in our list of facts about cat pee below. Some scientists view cats as the ultimate example of evolution because of how well-adapted they are to their niche in the food chain, and you better believe their urinary system plays a supporting role.

divider single cat paw oct 2024

The 6 Facts About Cat Pee

1. Urine Production Serves Several Functions

To confine the urinary system only to waste removal negates the other vital functions it serves for felines, humans, and other mammals. It also plays a crucial role in blood pressure by influencing blood volume and sodium retention. The body strives to maintain a balance between the concentration of ions within the inter- and intracellular environments.

The urinary system influences blood cell production through hematopoiesis. It maintains the electrolyte balance, which controls many critical functions. Basically, cat urine is imperative to the animal’s existence.


2. Scent Marking Is an Essential Component of Feline Non-Vocal Communication

Felines live in an olfactory world. Humans have only 2.5% of the scent receptors that our cats have 1. The sense of smell comes into play in many areas for cats where it doesn’t with humans. One way is through scent marking. Felines use this to delineate their territories. This non-vocal communication helps these animals avoid conflict.

Fights between cats are costly, whether you’re the victor or the loser. It makes evolutionary sense to avoid this gamble. Scent marking accomplishes this goal. Scent glands located near the cat’s hind end allow them to mark their space to prevent unnecessary encounters with other animals.

cat with pee stain on carpet
Image By: Africa Studio, Shutterstock

3. Cats Don’t Urinate as Frequently as Dogs

Cats don’t urinate frequently compared to dogs (two to four times per day compared to a dog’s three to five times). However, it’s often concentrated when they do. Much depends on the animal’s diet. If you feed your pet kibble, they will often drink more to meet the 4 ounces per 5 pounds of body weight they require 2. Of course, canned food provides more moisture. It’s worth noting that the fluids of the prey they eat satisfy this need for wild felines.


4. There Are Different Kinds of Peeing

If your cat is peeing outside the litter box, there is a chance that they are spraying instead of urinating. What’s the difference? Spraying or marking is often done on vertical surfaces and lets other cats know that something is theirs, whether it’s a toy or territory.

However, some cats also pee outside the litter box when stressed or nervous. This type of peeing is usually a call for help and appears on horizontal surfaces.

You are free to use this image but we do require you to link back to Catster.com for credit

5. Frequent or Painful Urination Is a Sign of Urinary Stones

Domestic cats fed a commercial diet with enough water usually urinate about twice daily. That makes it easy to determine when something is amiss. Felines often hide pain and illnesses, making it challenging to identify them in the early and detectable stages. However, it’s hard for them to keep it under wraps if you notice frequent or painful urination. This is often a sign of urinary stones.

It’s essential to act quickly. Remember that the condition has been ongoing before these behavioral signs are evident. That’s good advice for anything unusual you observe with your cat. They are masters at hiding their weaknesses, after all.


6. A Urinalysis Can Offer a Lot of Info About Your Kitty

Your vet may order a urinalysis as part of your cat’s annual exam, especially if they have a medical history of issues. This test yields much information, even if it’s not the most comfortable procedure for your pet to endure. It can tell your vet the state of your kitty’s urinary tract system. It can determine protein metabolism, bacteria, and electrolyte status.  It’s also relatively non-invasive.

male norwegian forest cat peeing outdoor
Image By: Elisa Putti, Shutterstock

divider 3 paws

Tips for Your Cat’s Urinary System Health

To keep your cat healthy, we recommend filling your cat’s bowl with fresh, cold water daily. Remember that felines are scent-aware, so make sure you rinse it well after cleaning it. Of course, the amount your kitty drinks depends partly on the type of food you give your pet. However, other factors can affect their consumption.

For example, a diabetic cat may drink more than a healthy animal. Likewise, a pet experiencing vomiting or GI distress will need more water to make up for what they’re losing. Other signs of dehydration include the following:

You should contact your vet if you notice any of these signs. They can indicate an underlying condition that requires treatment.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider 3 paws

Conclusion

Your cat’s urinary system is vital for ensuring fluid and electrolyte balance in their body. Felines differ from many other animals because of their meat-based diet. Proper hydration is necessary so that this system can do its job efficiently. While cats often hide signs of illness, their urine and its production can often reveal when something is wrong.


Featured Image Credit: cunaplus, 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

Why Is My Cat Bobbing His Head? 6 Vet-Verified Reasons for This Behavior

Head bobbing in cats can occur for a variety of reasons, some simple and others more serious. In many cases, your cat’s head...

I Just Got a New Kitten & My Older Cat Hates Them: 6 Vet Approved Tips on What to Do

Bringing home a new kitten can be stressful not only for your new addition but for your existing pets as well. There is...

Why Does My Cat Stare at Me Without Blinking? 5 Possible Reasons

For as much as we might try to meow back and forth with our cats in an attempt to communicate, our efforts are...

Ask Dr. Paola – Moving, Pulling Fur Out & Scratching Couch (August 18, 2025)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

Can Cats Get Dizzy? Vet-Reviewed Science & Facts

While dogs are often jokers, cats are the elegant masters of the home. We rarely see cats, especially adult felines, tripping around the...

Why Do Cats Like Cardboard? 5 Interesting Reasons

It’s not a secret that cats have a special affinity for cardboard. Most cat owners have found themselves baffled by the fact that...

13 Vet-Approved Home Safety Tips for Small Children & Cats

The best parents do everything in their power to keep the small beings they’re responsible for safe. This applies to our pets just...

Why Does My Cat Look Out the Window All Day? 5 Reasons & Care Tips

Does your cat love their window seat? Many cats spend most of their days hanging out by a window to see what’s happening....

Keep reading

10 Best Flea Powder for Cats in 2025 – Reviews & Top Picks

Fleas are one of the most common pests that affect cats, and they can rapidly create an infestation in homes. If you’ve found fleas on your cats or inside your house, it’s important to react quickly and equip yourself with...

maine coon cat lying on the floor

15 Common Household Hazards for Cats & Vet-Approved Safety Tips

Cats can be incredibly curious, and many seem to have the remarkable ability to find new ways to get in trouble. Pets thrive when they’re free to investigate and explore with enthusiasm, but you must ensure they play in safe...

an orange tabby cat looking up

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest eaters will delight in snacking on your houseplants. So, if your kitty decides to eat either an...

Can Cats Eat Onions

Feline Leukemia Day 2025: What It Is & How To Participate

There are many wonderful pet holidays every year, such as Walk Your Pet Day and Cuddly Kitten Day. These holidays can be fun and help us bond with our pets. However, few of these holidays are as important as Feline...

vet checking up a cat

Where Do Outdoor Cats Sleep? 7 Places They Like to Curl Up (Vet-Reviewed)

Some cats are strictly indoor pets and prefer lounging on a bed, tower, or sofa. However, others split their time between being inside and outside. So, when it comes to finding a safe place to sleep outdoors, where do our...

cat walking outdoors looking at the camera

Why Is My Cat Always Hungry? 10 Vet-Verified Reasons for Excessive Eating

There are many different reasons why a cat may seem excessively hungry. At times, the reasons might be normal—an overly active cat that receives plenty of exercise will probably be hungrier than a cat that is sedentary. At other times,...

tabby cat eating from metal bowl

Can Cats Eat Lemongrass? Vet-Reviewed Facts & FAQ

Lemongrass is a common ingredient in several meals. You can use it in marinades, stir-fries, spice rubs, salads, and pastes. However, if you’re using lemongrass in a meal, you should not share it with your feline, as it can be...

Can Cats Eat Lemongrass

Do Cats Revenge Poop? Vet-Reviewed Behavior Facts

Our cats communicate their interests, likes, and dislikes through a long list of methods. Some do a series of vocalizations, while others rely on body language translation. But what about when it comes to the litter box? If your cat...

hand picking up cat poop