Thundershirt hasn't work so far for thunder or car anxiety...but I've only tried it once for both thunder and car. The weird thing is that Roxi loves wearing her Thundershirt. When I bring it out, she gets excited and stands so still for me to put it on her. I think that she thinks that she's going "bye-bye." She loves to go in the car. She runs up to the door and can't wait to get in. It's just that once she's in, she just shakes so much
