Final answer:
Animals are traditionally divided by biologists into groups based on anatomy, habitat, and feeding habits, leading to categories like rodents and carnivores. Human societies also have divisions related to animals through gendered labor roles, and there's a discussion on the natural behavior of animals in the wild.
Step-by-step explanation:
The topic that divided the animals into different groups is based on concepts in biology. In traditional biological classification, mammals are divided according to their physical characteristics, which include anatomy (body structure), habitat, and feeding habits. This led to the categorization of mammals into various subgroups such as rodents, carnivores, insectivores, bats, and primates. Additionally, human societies have historically had a division of labor related to animals, where gender roles determined responsibilities in activities such as hunting, gathering, and herding.
It is also essential to consider the symbolic and practical aspects of animals in human societies, as discussed in topics like 'Animals and Subsistence' and 'Symbolism and Meaning of Animals'. Furthermore, the sometimes brutal reality of animal behavior in nature, commonly described as 'red in tooth and claw', is a reflection of survival strategies where carnivorous animals hunt and consume other animals to sustain themselves. These concepts help us understand the complexities of animal behaviors and human-animal relationships.