Does Cat Poop Turn Black When It Dries?

Cats use their feces as a way to clean their bodies and rid themselves of waste. Pooping is a natural process that cats use to clean their bodies and rid themselves of waste.

Many people are curious about whether or not cat poop turns black when it dries. Some say that it does, and some say that it doesn’t.

Does cat poop turn black when it dries?

The short answer is yes. Some types of cat poop can turn black when they dry out. 

When cats deposit their droppings, they usually do so in a designated spot near the litter box. However, if your cat is having problems properly eliminating, you may see poop spread around the house. This is because when cats eat and drink, they also release waste.

When a cat releases waste, it is usually brown. But, if the cat’s waste dries, it can turn black due to the presence of tannins and other substances in their diet. Tannins are a plant compound that gives plants red, brown, and black colors.

Some animals, such as cats, eat lots of tannin-rich foods, which can end up in their poop. Tannins are also present in some plant leaves and flowers.

What causes black-dried cat poop?

Many factors can cause dry black cat litter. Apart from the presence of tannins, dry cat poop that is black can also be a sign of illness or problems. 

One of the most common causes is a medical condition called feline constipation. This medical condition occurs when cats don’t have enough fiber in their diet, and as a result, their intestines can become inflamed and impacted. 

This can lead to straining during elimination and black-dried cat poop. Other causes include diarrhea, intestinal parasites, food allergies, and liver disease. 

In cases where the underlying cause is not identifiable or treatable, black-dried cat poop may remain a sign of illness or problem.

Does black dried cat poop smell bad?

Black-dried cat poop can smell bad, depending on the bacterial and chemical content of the feces. This is because black cats are more likely to have higher levels of bacteria and chemicals in their feces, which can cause an unpleasant odor. 

The smell will vary depending on the cat’s diet and metabolism. Some people find the scent unpleasant, while others find it merely strange.

What are the effects of black-dried cat poop?

Black-dried cat poop is a byproduct of indoor cat ownership and can contain harmful bacteria. Left uncollected, black-dried cat poop can spread harmful bacteria throughout your home, including surfaces your cats regularly touch. 

Black-dried cat poop also contains a high nitrogen level, which can cause environmental damage. 

The effects of black-dried cat poop vary depending on the type of bacteria present, but in general, it can cause respiratory issues, promote the growth of mold and mildew, and create a foul odor.

What to do if you see black dried cat poop

If you notice black dried cat poop in your home, there are a few things you can do to clean it up:

  1. Sweep the area to remove any loose debris.
  2. If there is paint or other surfaces that could be damaged by feces, remove them first.
  3. Use a vacuum cleaner with a hose attachment to suck up all the dirt and debris. Be sure to use the crevice tool if furniture or walls are hiding behind things.
  4. Finally, pour some bleach into a bucket or spray bottle and wet the entire area. Scrub with a brush until the poop is gone. Pour a layer of baking soda over the top and let sit for at least an hour before rinsing off with water.


When a cat deposits feces, the waste is usually brown or green in color. However, when it dries, feces can turn black because of the presence of tannins and other chemicals. 

Black cat poop may indicate that your cat is ill or has a problem with constipation. If you notice black cat poop and can’t figure out what’s wrong, take your cat to the veterinarian for an examination.

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