Pheromones are chemicals released by living organisms to send messages to individuals of the same species. Pheromones play an important role in
ensuring the reproduction of a species. They also serve to warn other members of the species of danger, to mark out territory, and to indicate food When an ant is disturbed, it releases a pheromone that can be detected by other ants several centimetres away, causing them to run about as they work to remedy the Certain ants, as they return to the nest with food, lay down a trail of pheromone. This trail attracts and guides other ants to the Some pheromones are deposited with the urine or faeces of an animal to mark its territory and warn away intruders. This is why you see dogs urinating on lamp posts!