Final answer:
Men in a non-sociable state of nature can lead to a life described by Hobbes as solitary and difficult, prompting the formation of social contracts for stability. In contrast, many social animals cooperate for group survival, forming complex societies.
Step-by-step explanation:
When men do not live sociably in the state of nature but some animals do, it can lead to various outcomes for different species. In the context of humans, political philosopher Thomas Hobbes suggested that without society's structures, life would be 'solitary, poor, nasty, brutish, and short,' leading to the formation of a social contract where natural rights are exchanged for the order and stability of a monarchial government. However, looking at the animal kingdom, social behaviors evolved because they offered survival and reproduction advantages. For example, social animals such as ants display cooperation within their societies, each member fulfilling a specific role for the group's benefit. This cooperative behavior is not just instinctual but contributes to the complex functionalities of animal societies such as hierarchical structures and division of labor.