My cat went out this morning at 7am and all seemed fine. When I came back home, I notice her nose was dark. I thought it could've been dirt, but after checking I noticed not only it is black, but also the hair looks shorter in the area. She was diagnosed with stomatitis a while back, but was checked recently and it all seems fine.

Her behaviour is the same as always, she's eating and using the toilet normally. She loves sleeping in sunny spots.

I'll be bringing her to the vet but all I want to know for now is whether it's an emergency.

The first photo shows her after and the second before I noticed the change on her nose.



  • did you ever figure out what this was? My cat has the same thing and I can't find any information online.
    – sjk1984
    Dec 29, 2020 at 16:21
  • 2
    Unfortunately, I didn't, but it went away after a couple of days. She had no pain or stopped drinking water/eating. I'd say call a vet and explain over the phone, including any symptoms of lack of thereof.Sorry I couldn't be more helpful.
    – mari_0103
    Dec 30, 2020 at 23:58
  • The tip of my cat's nose always darkens whenever she's sick. Once she is feeling better, it begins to clear. If she acts very sick or like she's in a lot of pain I will take her to the vet for antibiotics or whatever she needs.
    – Vickie
    May 18, 2023 at 20:33

4 Answers 4


It doesn't look like an emergency given a lack of behavioral differences but you should still contact your vet.

Double check that it isn't a stain; you can dab gently with a moist cotton ball to see if the cotton ball picks up any color. If so, you'll want to clean the fur.

Otherwise, given the hair looks shorter than before, it may be from physical trauma; maybe your cat ran into a wall or door, leading to internal bruising (hematoma) and possibly chipping the fur.

Sunburn is also a candidate given your cat likes to sunbathe, and animals with white or lighter fur color are more susceptible to sunburn and skin cancer, but it seems less likely.


Most likely your cat has run into a window or similar object and gotten a bruise on the nose.

The cause might be trying to attack its own reflection; cats are often very territorial, so when they see another cat they will try to chase it away even if it is their own reflection.

It does not look serious to me, but a vet will have to take a look at it.

  • Thanks for your insight. I was terrified, it's all OK now.
    – mari_0103
    May 14, 2020 at 20:11

I know this is 2 years later answer, but I want to share with you. My cat's nose is pink, in just hours it turned into totally black color, and she looks physically bad / exhausted so I bring her to vet. The doctor did an blood test & internal organ test. And the result is my cat was diagnosed with last stadium of Hepatitis & Kidney.. I was so shocked. And she died 4 days after that. Doctor says that the sickness come from her parents, but I think it can be from food also.

Remember to always be with your cat, my cat immune system goes down drastically (this is the cause of her nose turn black suddenly) I left her for 2 weeks, I had to live separated from her because I gave birth to my baby. She missed me, she lost me, this is the most painful loss I ever had.


I know this answer is late but it may help someone else who is looking for the same answer. This happened to my cat, one month later I found out he had lymphoma and ended up putting him to sleep. It may not be directly connected but I think it's likely a symptom/sign of an underlying issue. The darkening on his nose came and went a few times along with some lumps which formed pretty suddenly. I took him to the vet and found it was a really aggressive lymphoma. When he stopped eating I took him to be put to sleep to spare him suffering. Hope this is helpful.

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