What are pheromones primarily used for in animals?

Pheromones serve a crucial role in communication among animals. They are chemical signals that elicit specific behavioral or physiological responses in members of the same species. For instance, animals use pheromones to mark their territory, signal alarm, or indicate the presence of a mate. This mode of communication is vital for reproductive success, social interaction, and survival.

While defense mechanisms, attracting food, and setting territory can involve other types of signals or behaviors, the primary function of pheromones is rooted in their ability to convey information and facilitate communication between individuals. For example, many insects release pheromones that guide others to food sources or alert them to danger. However, the most direct and widespread use remains in the realm of social interactions, mating, and reproductive behaviors, solidifying the idea that pheromones are fundamentally a means of communication within species.