Pheromones are chemical substances secreted by an animal that influence the behavior of other animals of the same species. Unlike other hormones , pheromones are secreted externally and influence other animals , typically by tang. In this case , pheromones may play a very necessary role in animal behavior. In dogs , pheromones probably influence group integration and are a element in fighting and usual aggressiveness. Some theorys suggest that dogs free pheromones in urine and feces , and perhaps through exhaled breath , subcutaneous glands at the menial of the tail and the foot pads. This would tend to elucidate why aggressive , fighting dogs are ofttimes compulsive urine sniffers and urine markers , and why they become fewer aggressive when sniffing and urine marking are not allowed by their owners. Pheromones may act as a trigger or primer for certain types of behavior. This case is typical of a heap of wherein a dog appears to sense , by tang , another dog that may be perceived as a threat. Also typical among a heap of vicious biting dogs is the poverty to fleck a strange territory with their own pheromones before launching an fray. Some take appointment level when the biting dogs were on their home territory. Remedial programs include restricting urination of the problem dog to a unmarried area of his own yard. This tends to lower the aggressiveness , as impartially as mitigate the incidence of household urination.
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