1. Increased Safety: Living in a group provides a strong defense against predators. More eyes and ears are constantly on the lookout for danger, and a group can also work together to fight off attackers. This is especially important for animals that are relatively weak or vulnerable individually.
2. Improved Hunting Success: For many animals, hunting together can be significantly more efficient than hunting alone. This is especially true for cooperative hunters like wolves and lions, who can coordinate their efforts to bring down larger prey. Even smaller animals like birds can benefit from group foraging, as they can share information about food sources and work together to defend them from competitors.