Segregated early weaning is linked to an increased incidence of belly nosing. Although the belly nosing for piglets weaned at different age has been reported, the variation among piglets weaned at the same age has not been described. The objective of this study was to determine the variation of belly nosing among piglets weaned at the same age and its association with other behaviours. A total of 80 piglets weaned at 12-14 days of age were videotaped for 24 on day 7 post-weaning. On average, piglets spent 2.4% of their total time belly nosing. About 80% of piglets performed belly nosing, and 5% of piglets spent more than 8% of time belly nosing. Standing was positive related to belly nosing, indicating that belly nosing was most common in active piglets. Belly nosing was more closely associated social interaction than with eating or drinking.