Data from over one-thousand different species was collected to gain further insight into how many of these animals were killed by a member of the same species. A pattern emerged between animals that lived in groups and animals that lived on their own, showing that territorial group animals displayed higher incidents of lethal violence than animals that slightly isolated themselves from others of the same species.
Scientists not being able to clearly differentiate types of lethal violence when comparing species, as well as gathering a sufficient amount of data, created a hurdle in the experiment and the margin of error was taken into consideration by workers, with the intention of diving into more species in the future. The addition of more species, strengthens the validity of data and can aid in gathering a more solidified correlation. Identifying a correlation in behavior of animals through genetics is an essential factor in gaining an understanding of the human race in relation to evolution and why humans do what they do.