About a week and a half ago our puppy went into the vet to have her teeth cleaned. This process requires that the dog be put under anesthetic throughout the procedure. To ensure that the animal stays warm, heating pads are placed in various spots on the body. The day after the procedure, we noticed a blister forming on Chloe's belly. When we brought her back to the vet we were informed that she must have been burned by the heating pads (uncommon but known to occur).