What is the black spot or hole near my dog's penis? Should I worry?

This looks like a small pustule - like a pimple from an infected hair follicle. I suggest you use these medicated pads on that lesion 1-2 times per day. If after a few days it does not start to look better OR it looks worse, then he needs to see a vet. ( https://www.allivet.com/p-5393-douxo-chlorhexidine-3-ps-pads-for-dogs-and-cats-30.aspx?SearchTerm=duoxo%20pad+Auto )

Without being able to perform a close physical exam or view an image, it's hard to say for sure what these might be. Some dogs will have black skin pigmentation in this area that can appear as black specks, especially if they have a history of allergies or itching in this area. I would recommend having this examined by a vet to be safe - it may not be anything concerning, but it may also be a skin infection of some kind or even early signs of a skin tumor such as a [melanoma](https://www.petcoach.co/dog/condition/malignant-melanoma/). Your vet can take a look and let you know if it is a cause for concern or not.

If you look at it closely, you should be able to see legs if it is a tick. I cannot tell because when I enlarge the photo it gets too blurry. The other options as to what it could be is a cyst or a tumor. I really think you need to have him to your vet for an exam. It is better to be safe than sorry. I can appreciate your financial constraints but maybe you can get assistance from one of these organizations: ( https://www.dogingtonpost.com/need-help-with-vet-bills-or-pet-food-there-are-resources-available/ ) Since you did not post your accurate location I cannot help you in finding a low cost vet clinic. You can a do a search online yourself or call your local Humane Society as they often know of the more affordable clinics in your specific area.

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) might be needed to solve the problem, but disinfection can possibly be started at home with very diluted hibiscrub or betadine or salted water baths (twice daily for 3-4 days should be enough). Buster collar may be useful as well to avoid any licking. 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.

It looks like a possible pustule. If there are several of these then he should be seen. However, if it is just one then I would watch it for a few days. If it doesn’t dry up and start to resolve in a day or two then she should be seen. It is very common for young dogs to get little skin infections. Best of luck and thank you for using Pet Coach.

It appears to be a small hair follicle infection. I don't think you need to be worried. I just suggest you apply this three times daily. If no improvement in about 7 days, then he should see your vet for an exam. https://www.petco.com/shop/en/petcostore/product/zymox-spray-with-5-hydrocortisone

Those black spots look like comedones (aka: blackheads). I suggest you use this shampoo that contains benzoyl peroxide. Lather the affected areas (no need to do the whole dog), let it sit for 10-15 minutes and then rinse throughly. Do this every 2-3 days until they are gone. Then use this shampoo 1-2 times every month for maintenance. ( allivet.com/p-7130-oxiderm-shampoo-ps.aspx )