My sick cat has black gunk on his mouth and chin. What could it be?

Black stool is concerning as that may indicate a bleed in the upper GI tract such as the stomach. If he is also vomiting and has had this ongoing for several days it would be best to seek out veterinary care in person ASAP.

This is probably an upper respiratory infection. it's very common in young cats and is very contagious to other cats as well. It is treated with antibiotic eye drops/ointment and oral antibiotics for about 2 weeks. if left untreated many cats will end up blind or even die from the disease. I advise going to your vet asap to start the treatment right away.

BI’m so sorry to hear about Cherry. Unfortunately, her signs are non specific, meaning these signs could be cause by many things. I’m not sure what the black substance around the mouth is, but it may be that she is too sick or weak to clean her mouth. You can try deworming her (try drontal cat tabs or Excel cat roundworm liquid if you can get them). Treat her for fleas and ticks. You can also try high calorie food like Nutri-cal to help her gain strength. If those are not helping, you’ll have to visit the vet. Hope this helps and best of luck to you and Cherry!

There is a wide variety of normal pigmentation in cats' mouths, ranging from pink to gray to black. If this is a sudden change, it should be addressed with Shalom's vet, but otherwise it is likely normal.

Unfortunately, without a physical exam and diagnostics it is very difficult to determine what is making your cats sick. The discharge from the ears may be an ear infection (mites, bacterial or fungal), but the vomiting can have many causes. The most serious would be viral infection. Supportive care, such as IV fluids and medication to control vomiting, may be indicated while a diagnosis is sought. This will require a veterinarian. There is very little you can do at home other than to keep the warm and as stress free as possible. Offer a bland diet and a 50/50 solution of water and unflavored PediaLyte to maintain hydration.

Unfortunately, in this area I would be concerned that this is some type of cancerous growth.I would recommend an immediate vet visit - your vet can take a sample of the lump and tell you what it is. Based on that diagnosis a treatment plan can be developed.

I am so sorry to hear about your kitty. Chipotle sounds like and appears to be quite ill based on your description/photos. The drooling could be do to nausea (which can be due to many different diseases), infection in the mouth or the throat or nasal passages, tumors in these areas. He needs to be seen by a veterinarian as soon as possible to determine what is causing these symptoms.