A Mating is assumed to have occurred if a male successfully Mounts an estrous female who Stands-to-Mate rather than moving forward. Intromission and ejaculation occur. A successul Mating is assumed to have occurred if the male achieves intromission for at least 25 seconds. Mating is usually associated with Estrous-Rumbles by the mated female.
After a Chase Esau stands Reaching-Over an estrous female and Mounts her. While the long grass prevents us from having a good observation, we assume from the length of time he was Mounted (37 seconds) and the fact that the female Stands-to-Mate, that this was a successful Mating. During the Mating a rival male reaches out to touch Esau Trunk-to-Mouth and Esau touches him back. (Amboseli, Kenya)
