My 9 year old Gracie has tumors growing fast in her tummy. It's gotten huge. I don't want to put her to sleep to have them taken out. She didn't do well after having her teeth cleaned. My Cooper the Schnauzer is 4. He has had problems with heat for a while. Guess outside when it's warm, comes in itching. Now, he gets hives! I gave him a painpill if what was left over from Gracie's teerh cleaning. It worked. I'm reading antihistamine is supposed to be given. Will see what the vet says.