Genesis 13:5-7

Lot, who was traveling with Abram, had also become very wealthy with flocks of sheep and goats, herds of cattle, and many tents. But the land could not support both Abram and Lot with all their flocks and herds living so close together. So disputes broke out between the herdsmen of Abram and Lot. (At that time Canaanites and Perizzites were also living in the land.)