How much water does your cat need to drink?

by beaconpet
Cat drinking a lot of water

If you want to keep your cat healthy, providing them with fresh drinking water is crucial. Water plays a vital role in helping their kidneys flush out toxins from the blood, and dehydration can be extremely dangerous, even leading to death if left untreated. It’s important to monitor your cat’s water intake and be aware of any changes in their drinking habits. Excessive drinking could be a sign of an underlying health issue, such as hyperthyroidism or diabetes. The type of food they eat also affects their water needs, with cats on a dry food diet requiring more supplemental drinking water than those on a raw or canned food diet. It’s recommended to always keep fresh, clean water available for your cat and watch for signs of dehydration. Adding water to their food or making their drinking water more interesting with an ice cube or two can also encourage hydration. By staying attentive to your cat’s water intake and providing them with the necessary resources, you can help ensure their overall well-being.

So how much water does your cat need to drink? Explore with Beacon Pet right now!

Excessive Water Intake

Excessive drinking of water can be a red flag for feline hyperthyroidism or feline diabetes. While cats may instinctively drink more during hot weather, it is important, as with all cats’ habits, to know how much a cat drinks normally. If they suddenly start consuming large quantities of water and also show other symptoms, an immediate veterinary consultation is indicated.

Cat drinking a lot of water

Water Needs Depends on Diet

Cats’ body tissues consist of about 67 percent water. Coincidentally, that is approximately the percentage of water in the prey they catch and eat in the wild. In contrast, dry cat food contains between 6 and 10 percent water, and canned cat food has at least a 75 percent moisture content, making it a good source of water. Therefore, a cat on an all-dry food diet would require more supplemental drinking water than a cat on an exclusive raw or canned food diet. Likewise, a cat on a combination of dry and canned cat food also needs more drinking water.

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Dr. Jennifer Coates, in an article for, created a formula suggesting that a 10-pound adult cat on a dry food diet needs about a cup of water a day. The same cat on a canned diet needs about a third of a cup of water daily.


To ensure your cat stays properly hydrated, it is important to provide fresh, clean water at all times, regardless of their diet. Consider using an automatic water dispenser to make refreshing water easily accessible to your cat throughout the day.

It is essential to monitor your cat for signs of dehydration. One way to test for dehydration is by gently pulling up the loose skin at the nape of the neck. If the skin springs right back, your cat is sufficiently hydrated. However, if it is slow to recede, it may indicate dehydration.

it is important to provide fresh, clean water at all times

To make drinking water more interesting for your cat, you can try adding water to their canned food or adding a few ice cubes to their water bowl. These small additions can encourage your cat to consume more water and stay properly hydrated.

If you observe that the neck skin does not appreciably recede, and your cat shows any other sign of sickness, it is important to call your veterinarian immediately. They can provide the necessary guidance and treatment for your cat’s well-being.

Effects of Dehydration

Dehydration in cats can be dangerous and, if not treated, can lead to severe consequences, including death. The lack of sufficient fluids in the body can have a detrimental effect on overall health. Dehydration can cause electrolyte imbalances, affect organ function, and impair the body’s ability to eliminate waste products.

Long-term effects of untreated dehydration can be severe. It can lead to kidney damage, urinary tract issues, and even compromise the immune system, making the cat more susceptible to infections and diseases. Therefore, it is crucial to address any signs of dehydration promptly and take appropriate measures to ensure your cat’s hydration levels are restored.

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Kidney Failure and Extra Fluids

For cats in kidney failure, whether acute or chronic renal failure, providing extra fluids becomes even more essential. These cats often require additional fluids to maintain their hydration levels and support kidney function.

One method of administering extra fluids to cats is through subcutaneous drip therapy. This therapy involves injecting fluids under the cat’s skin, allowing for absorption over time. Subcutaneous drip therapy can be carried out at home and is relatively easy to learn and perform. With most cats, significant improvement can be seen after receiving these treatments.

Differences Between Dry and Canned Food Diets

The water content in a cat’s diet plays a significant role in their overall hydration. Dry cat food typically contains between 6 and 10 percent water, while canned cat food has a moisture content of at least 75 percent. This stark difference in water content makes canned cat food a valuable source of hydration for cats.

When considering the impact of diet on a cat’s supplemental water intake, it is important to note that a cat on an all-dry food diet would need to consume more drinking water compared to a cat on an exclusive raw or canned food diet. Similarly, a cat on a combination of dry and canned cat food would also require more drinking water.

Experts suggest that a 10-pound adult cat on a dry food diet should consume about a cup of water per day, while the same cat on a canned food diet needs approximately one-third of a cup of water daily.

Differences Between Dry and Canned Food Diets

Monitoring Drinking Habits

Knowing your cat’s normal drinking habits is crucial in identifying any changes that may indicate an underlying issue. By understanding what is typical for your cat, you can quickly notice any deviations from their normal behavior.

Signs of abnormal drinking behavior include sudden changes in water consumption, such as drinking excessive amounts or refusing water altogether. If you observe these signs, it is essential to consult your veterinarian. They can assess your cat’s health and provide appropriate guidance or treatment if necessary.

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Factors Affecting Water Consumption

Several factors can influence a cat’s water consumption. Environmental factors, such as temperature and humidity, can affect how much water a cat needs to stay hydrated. Cats may drink more water during hot weather to help regulate their body temperature.

Additionally, factors like age, weight, and activity level can impact a cat’s water needs. Kittens, for example, require more water than adult cats due to their smaller size and higher energy levels. Overweight or obese cats may also have increased water needs.

Sometimes, cats may face barriers that prevent them from drinking an adequate amount of water. Issues such as stress, anxiety, or a dislike for their water bowl’s location can discourage cats from drinking enough water. Finding ways to overcome these barriers, such as providing multiple water bowls in different areas of the house or using a cat water fountain, can encourage cats to drink more water.

Differences Between Dry and Canned Food Diets

Health Benefits of Sufficient Water Intake

Proper hydration plays a vital role in maintaining a cat’s overall health and well-being. Water is essential for kidney function, as it helps flush out toxins from the blood. Sufficient water intake can prevent the formation of urinary crystals or stones, reducing the risk of urinary tract issues.

Additionally, hydration is crucial for various physiological processes in a cat’s body. It aids in digestion, regulates body temperature, lubricates joints, and supports optimal organ function. Ensuring your cat drinks enough water can contribute to their overall health and longevity.


Providing adequate water for your cat is vital for their health and well-being. Monitoring their water consumption and ensuring fresh, clean water is available at all times is crucial. Additionally, being aware of your cat’s normal drinking habits and promptly seeking veterinary help if you notice any changes can help identify and address potential health issues early on.

Remember, water needs depend on diet, and cats on dry food diets may require more supplemental drinking water than those on canned or raw food diets. By understanding the importance of hydration and taking the necessary steps to promote sufficient water intake, you can help your cat maintain optimal health and hydration levels.

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