Hi! My English bulldog Bella is almost 8 months old. She is my first English Bulldog. She has been on Purina Pro Plan. I recently came across this site and read about Purina not being a good choice. So I tried changing her dog food to Fromm Grain free Heartland gold. I started the transition on this past Sunday. Yesterday she seemed to have a few bumps on arms and sides. I called vet and was told to give her 1 1/2 pills of Benadryl. This morning she woke up with hives a lot larger then day before. I gave her some more Benadryl. The vet told me to give her til Friday and then if it doesn't go away take her in. I'm not sure if it was the food or could it be a new shampoo (Chi shampoo & Condioner) I used on her on Sunday. Those are the only new things that I could think of that's causing her to have hives. My question is could it be one of those two things? Or is it something else because it was three days later that she broke out.