Strange walk

[kaysevicious]

I have 2 female Guinea's one is a little older then the other.
We introduced them about 3 weeks ago and they get on brilliantly though
Rikku (the older of the 2) started doing a walk around the cage where she gets really low and wobbles her bum making a gur/pur sound.

Recently Yuffi has started doing this, they walk in a pair next to each other doing this walk/noise.

Wondering if anyone knows what this is?

 

[nutmeg]

Rumble Strutting (Bum Wiggling) Normal behaviour, just displays of dominance and a little bit of narkyness. Sows will often do this when they are in season, it's like saying don't mess with me. Not usually anything to worry about. x