hives or whelps

Question
not sure what they are but my 6month old boxer had a spot the size of a half dollar this after noon and now he has bumps all over his body now have given him some benyidril ealryer but the spots keep spreading not sure if it is poison oak or ivey it is getting around his mouth and his little boy parts

Answer
Dani-

It could be poison ivy, hives, or insect bites. Is he itching or in pain? does he have any swelling anywhere?

Benedryl is good to relieve some of the itching and the swelling, but if it continues to spread or he becomes very uncomfortable please take him to the vet ASAP. They can do a real diagnosis- I can only guess over the internet without seeing him and running tests!