Atlantic spotted dolphins often take part in aggressive interactions, perhaps for conflict resolution or mock fighting, during which juveniles develop skills needed in adulthood. This video sequence begins with a charge behavior in which the dolphins face each other and swim forward, in a "jousting" fashion. The dolphins open their mouths as they pass each other, perhaps to show off their teeth. Next, you will see one dolphin chasing after the other's fluke (or tail), followed by the convergence of the group in a more uniform fashion. Observe the dolphin in the center of the group as it reaches out its pectoral fins towards the dolphins swimming on either side. This behavior is known as "pec rubbing", and may follow aggressive encounters to reconcile or show affiliation with associatates. This sequence of behaviors is reminiscent of the grooming behavior of chimpanzees that often follows aggressive interactions.