Dominance Play?

[Dilly's Piggies]

I rarely get to see this let alone get it on camera, I thought it was interesting behaviour.

5 sows live in this cage, the brown agouti, gold and white piggy is Willow who is the top sow, and the black, red and white piggy is Melody, she's ranked 3rd, from what I can tell anyway.

Melody looks like she's trying to be tough and dominate Willow, but Willow is being a crazy goofball and popcorning, rolling and running around Melody, almost like she's laughing at her!

It looks really funny regardless but can anyone tell me more about this behaviour?

 

[Wiebke]

It looks like they are playing, but with a little dominance mixed in. Is one of the girls coming up to a season?
I see this behaviour regularly from my boar pair, especially when Nye was still a teenager. With them, it is simply interactive/playful behaviour especially during roaming time.