They originally used dogs to pull travois with their belongings on them. When the Europeans came to North America, the Arapaho saw the Europeans' horses and realized that they could travel quicker and further with horses instead of dogs. They raided other Indian tribes, primarily the Pawnee and Comanche, to get the horses they needed.
The children often fished and hunted with their fathers for recreation. While they had more chores to do than present day Arapaho, they still had time to play games. They played many games, including one involving a netted hoop and a pole where they would try to throw their pole through the center of the net. It was much like the game of darts.
In present day, some Arapahos have gotten into the gaming or casino industry. A few of them own casinos, most notably the Arapaho Casino located in Wyoming.
During November 1864, a small village of Cheyenne and Arapaho became the victims of a controversial attack by the Union Army, led by Colonel John Chivington. This attack is now known as the Sand Creek Massacre.