cath answered question 7/25/2010 Dog Has What Appears To Be Hives. Bumps That Suddenly Appeared In Size From Peas To Silver Dollars On Face, Back, Sides And Legs. Nothing In The Environment Seems To Have Changed. She Is 18 Months, Had The Bumps For About 3 Hours Now? What you mean theres something wrong with your dog?...I'm not sure how to help; but id get her to a vet if I were you!