One of my pugs goes out every morning when I get up. When he comes back in he is swollen in his face and ears and broke out in hives on his belly. The other 3 pugs dont show any symptoms. I give him bendryl and it clears up in an hour or two. I cant figure out what he might be allergic to. This is his second summer and he did not do this last year. Nothing around the house has changed either. Anybody ever heard of a dog breaking out in hives?