Sexual behavior of Pecari tajacu (Cetartiodactyla: Tayassuidae) during periovulatory and early gestation periods.

•This study describes the sexual behavior in female and male collared peccary.•The frequency of sexual interactions increased from proestrus to estrus.•Mating events were less frequent during 0–3 days of estrus, than during days 4–8.•The parent recognition mechanism may occur in collared peccaries.•Behavioral monitoring is useful for the recognition of periovulatory period.