is about the length of my pinky nail and it looks like it’s leaving an open hole with no blood. Please help me!
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I have asked several people about what it might be, and it has to be a cutaneous horn.
A cutaneous horn is made of keratin - the same material as in your cat's claws.
Cutaneous horn and the formation of them can be an autoimmune reaction and is in the same family of reactions as psoriasis.
More information: https://www.vetinfo.com/cfoot.html
You need to see a vet for diagnosis and treatment of this problem.
Credit to Rebecca for her input to my question about this.
Where was this pulled out on the body? I have a cat that has an inverted nipple. This nipple gets filled with gunk. After a while a lump forms at that nipple under the skin and I will gently squeeze it to release the built up gunk. This is EXACTLY what this looks like. Identical. Cutaneous horns are hard. This gunk, think nipple cheese because that's what it is, is soft. And its harmless.