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Yes, some Native American tribes did fight with other Native American tribes. Some tribes even kept other Native Americans as slaves or hostages and destroyed villages.
Caddo Jumano and Tigua
the great plains.
Most were hunter gatherer tribes (opportunistic) with small agricultural communities.
The American bison were almost wiped out by deliberate over hunting to deprive the native American tribes of their main food source. This forced many tribes to be moved onto Indian Reservations, or starve.
Most native American kept dogs as pets. Please note that the dogs were not as much pets as useful tools to the tribes. They served as pack animals, guards, and in hard times as food for the tribes.
The Inuit and the Aleut are two separate native tribes of Alaska. Both of these tribes primary source of food is fish and other water dwelling creatures.
There were a number of Native American Tribes were violent and/or slave-owning and/or misogynistic and/or misandric and/or [insert problem word here]. Probably the most violent tribes were the Lakota (also called Sioux) and the Apache. These were tribes that actively attacked American Homesteads and killed scalped innocent White Americans. While some Native Americans had personal slaves, the majority of Native American slaves were vassal tribes that would be subordinate to a more powerful or violent tribe, but these individuals would be free to the extent that they could live their lives as they wished as long as they paid tribute (be it in men, food, or land).
The native Americans fought primarily over territory and food. In some cases, tribes would raid other tribes when resources became scarce.
Some tribes of native Americans were nomadic, others were not. For example the plains tribes were nomadic to follow the migrations of their main food source: Bison herds. But many other tribes were farmers or fishermen that stayed in one place.
Most, if not all, Native American tribes share the same "balanced view" of nature. No resource was exploited to exhaustion. Many tribes intentionally spread seeds for wild fruit trees and bushes as they traveled to ensure a good supply of food sources; this aided the fact that the next time they traveled they would have food on the journey.