What would cause itchy little bumps all over my dog?

Fleas
Allergies
Mange

More than likely it’s flea bites or some other little critter bite. Try giving your dog a bath in medicated shampoo…that should help.

Probably flea bites…get some medicated shampoo and flea drops…you may need to spray your house or yard too…

Itchy bumps could be flea bites, or “hot spots” they will itch even if the fleas have been killed. As any bug bite itches, these itch worse because they have the “venom” in the bites from the flea. I would suggest getting some benadryl for the itch. Get a cream and apply lightly to the bumps or itchy area. Do not allow the dog to lick it off. It may make him sick.You can also try giving him a bath in water with baking soda in it, this also helps the itch and soothes any sore spots from scratching. Baking soda will not harm him if he drinks it. I would use one cup of baking soda for every two gallons of water. If you are doing this in your bathtub, add one cup of baking soda then soak the dog in the water until he is completely covered, paying close attention to the itchy areas. I would do this a couple of times a week for about two weeks then wait and see what happens. If this doesn’t help then your dog may need to see the vet.

mosquito bites
ticks and fleas

fleas, ticks, other skin conditions. maybe your vet would know.