Keep an eye on it
What it can look like. A general, vet-reviewed example — signs vary and this is not a diagnosis. When in doubt, ask your vet.
Small bumps in dogs
Clinical name: Papules
Small raised red bumps, like insect bites scattered on the skin.

Where it shows uptrunk · groin · armpits
Typical patternTrunk, groin and armpits.
Linked allergy typesFlea allergy · Food allergy · Environmental (atopy)
Food vs environmentalNon-specific.
What you can do
Keep an eye out for bumps turning into pus-filled spots (a sign of infection).
Don't confuse it with
Other causes a vet will want to rule out: insect bites, bacterial folliculitis, mange.
This is educational information, not a diagnosis or treatment plan. Always see your veterinarian about your dog's health.

