I have an 8 month old ACD mix,who is pretty crazy. We got her a fleece sweater for Christmas. When she wears it, its like she is a different dog, Before coat: psycho, jumping on couches ect…, with coat: lays down, and is very quiet. Is there something about the coat that she is upset bye, and makes her not herself, or is this just a Jeckle and Hyde situation?