Figure 2.

(A) The six behavioral variables detected using an ethogram were collapsed into two primary factors using PCA followed by rotation. (B) Two factors characterize behavioral traits such as “fearfulness” in Factor 1 and “activity” for Factor 2. Horses with a high Factor 1 score displayed a larger flight distance and took longer to return to the pan. In contrast, horses with a high Factor 2 score walked and trotted more frequently while in the pen.