Male dogs use pheromones in urine to mark their territory, and for a male, urine markings are used to define the boundaries of their territory. Given these facts, what do the pheromones in male dog urine used for among the following options:
- Animal survival
 - define boundaries
 - poison predators
 - competition
 - competing for resources
 - detract enimines
 - animal transport
 - camouflage sent


 

  define boundaries       