I do not know exactly what answer you are looking for here considering the fact that there are many differences between the actions of animals and humans. The best answer I would give is that people have a sense of what is wrong and right and decide based on a moral subconscious. Animals act on they need to survive and do not care about acting civilized or what is right and wrong.
Ethnic Enclaves is the correct asnwer.
Throughout history, we see immigrants moving from one place to the other and often staying in neighborhoods with people with whom they shared the same nationality, culture and similar habits. In Sociology and Anthropology, an ethnic enclave is defined as a geographic area where a community that shares similar background maintains a strong sense of identity and customs from their place of origin. These ethnic enclaves were the most common option for these immigrants since they felt more welcome and safer from prejudice and discrimination.