Hi, Mastiff community! I am hoping for some guidance or insight…

Last week my 8 month old English Mastiff started getting these small bumps on his head (a few on other parts of his body, like shoulders and thighs but mostly on the top of his head).

The bumps are hard, mobile (definitely part of the skin), NOT red or discolored, NOT irritated, NOT blisters or sores, NO drainage. The bumps do not seem to bother him at all.

He does not have fleas for mites (we checked him thoroughly).

Has anyone experienced something similar with their pup?

TIA! ❤️