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.
a dirty mark or smear. 2. a smeary state. 3. a stifling smoke. 4. a smoky fire, especially one made for driving away mosquitoes or safeguarding fruit trees from frost. verb (used with object), smudged, smudging.