Why does my dog have a bloody-looking spot under her armpit?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 50 lbs
My dog randomly developed a bloody looking wound under her armpit. She was fine all day. The blood isn’t scabbed or actively bleeding. Almost like it’s under the skin. What could this be?
4 Answers
Most Helpful Answer
Published on February 14th, 2020
Ouch! That's quite the sore spot. It's possible it was snagged on something, or Shylah was licking/scratching at the spot. Since it's a rather large wound, it'd be a good idea to have your vet take a look so they can clean and clip around it and provide you with any antibiotics or pain meds as needed. Until then, keeping her from licking at it with an Elizabethan (cone) collar, and keeping the area clean and dry may help reduce irritation.
4Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on March 15th, 2020
Hi, and thanks for your question. This presentation could be due to a trauma or localized spot of skin infection (likely to be caused by bacteria). As a first approach, disinfection may be done at home with very diluted hibiscrub or betadine or salted water baths twice daily for a week. Buster collar may be useful as well to avoid any licking (if any). A check up, appropriate disinfection and possibly antibiotics (oral, topical or in a shampoo formulation) are needed to solve the problem if no improvement are seen in a week. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!
1Pet Parents found this answer helpful
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Published on March 6th, 2020
Hi, and thanks for your question. Even though a picture would help to understand better the underlying cause, This presentation could be due to a trauma or localized spot of skin infection (likely to be caused by bacteria). A check up, appropriate disinfection and possibly antibiotics (oral, topical or in a shampoo formulation) are needed to solve the problem. Disinfection may be started at home with very diluted hibiscrub or betadine or salted water baths. Buster collar may be useful as well to avoid any licking (if any). Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!
1Pet Parents found this answer helpful
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Published on July 11th, 2017
Sometimes small wounds will heal on their own by granulation (scar) tissue. However, if Saint keeps licking the area it will delay healing. I would recommend placing a cone on his head to prevent the licking. Also, he needs to see a vet to make sure it does not need surgical closure or antibiotics to help increase healing.
1Pet Parents found this answer helpful
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