[Felina]

Does anyone else's yorkie or just my Shelby Rose react weird every month when you apply the flea medication? The first of every month when we apply Shelby Rose's flea medication on the back of her neck, she starts acting strange.

She runs around the walls of the room with her tail tucked under her legs and huddles under things like she's scared. She's always perfectly fine the next day but just right after the application she appears scared and doesn't want to be held at all and hides.