Blackheads on Puppy?

Rescued this oddball yesterday. She was born hairless beside some on her head, very end of her tail and toes. No sign of mange (at least the signs I’m familiar with ie scabby/crusty skin, inflammation, itchy). Are these blackheads? I did run my nail over them and a few just slid out with no effort? Just curious what I can do to clear them and prevent them in the future. I do plan to consult the vet at our appointment, but that’s not until Monday!

Thank you!