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.
Define smear: a viscous or sticky substance; a spot made by or as if by an unctuous or adhesive substance â smear in a sentence a viscous or sticky substance; a spot made by or as if by an unctuous or adhesive substanceâ¦