Hi! Lucy received her 1st dose of Frontline last month. She is due for the second dose within the next few days. The first time I applied it between her shoulder blades she started whimpering very loudly. I asked my vet if it might have caused a burning sensation. She said it's possible that Lucy is sensitive to it, and if she reacts the same way when she's receives the second dose, we will have to find an alternative to using the Frontline. I always used Frontline on my other dogs in the past (they were large dogs) and never had any reactions. I'll let you know how Lucy reacts when she gets it again in a few days.
I'm so lucky to have Lady Lucy in my life!