Why are introductions between animals easier when they are young?

Introducing animals to one another is generally easier when they are young primarily because they have not developed aggressive behaviors. Young animals are typically in a phase of socialization where they are more open to new experiences and interactions with others. During this formative stage, they are less likely to feel threatened or to exhibit defensive behaviors that can lead to aggression.

This lack of established territoriality and behavioral patterns makes it simpler for them to form social bonds and learn appropriate ways to interact. They are also more adaptable and willing to engage in play, which fosters positive interactions. This social flexibility reduces the likelihood of confrontational behaviors that can arise in adult animals, who may have fixed patterns of aggression or territorial instincts that complicate introductions.

While size and curiosity can influence interactions, the key factor is the immature social structure that young animals possess, allowing them to navigate new relationships with a greater degree of ease compared to those that have already formed and solidified aggressive behaviors.