My golden doodle has dark spots like flea dirt, but I found no fleas.
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The dark substance appears from your photos to be sebum (skin oil) mixed with dirt, though it is difficult to say for sure without a hands-on exam. Around these lesions, I can see skin inflammation. It would be best for him to see a veterinarian, but if you're unable to take Justice to a vet, you will need to clip the hair using electric trimmers. Be careful to avoid causing skin abrasions. This will allow a better look at the lesions underneath as well as facilitate topical treatment. A good antiseptic is a spray called Vetericyn, available on Amazon.com and at some pet stores. Here is the Amazon link:
Vetericyn Plus All Animal Wound
Updated on September 23rd, 2025