Fraggle and her mistress, Moriah Tyrrell (10), from Kurow, were among the many entries in the new event, organised by the North Otago A and P Association in conjunction with Vetlife.
Animals of all shapes and sizes, from lambs, goats and calves to dogs, ponies and rabbits, were put through their paces.
Fraggle, a two-month-old half miniature Kune Kune, did not like her harness much.
The pig went for walks at home without a lead and had only been in a harness since Wednesday, Moriah explained.
The excitement of the day was a bit much for Fraggle and she was seen napping behind a pushchair.
Meanwhile, Sarah Dodd (8) and her lamb Buttercup won champion pet lamb.
Sarah said this was because Buttercup led so well: in spare time at weekends, she took Buttercup for walks.
North Otago A and P Association president Mark Lawrence was thrilled with the success of the day, which might become an annual event.