During the estrus or heat stage of her estrus cycle, her urine contains pheromones and hormones, both of which signal her reproductive state to other dogs. This is the reason that dogs in heat will attract other dogs, particularly males.
smock. 1  a loose, lightweight overgarment worn to protect the clothing while working. 2  to clothe in a smock. 3  to draw (a fabric) by needlework into a honeycomb pattern with diamond-shaped recesses.
The round smock is a pullover style with an open neckline and a flat, round collar. This smock is reversible front-to-back. A feature of Sussex smocks or round frocks is the lack of elaborate decoration; instead there is fine embroidery on the yoke, collar, cuffs and shoulder.