Bonding Noises... Good Or Bad?

[Herbietheguinealion]

https://www.facebook.com/video.php?v=585177381581719

I hope this works.... any ideas... what the noises are?

 

[Wiebke]

I can't hear much of the piggy noises, but from the body language, they are both rumblestrutting at each other, but are not sending out any highly aggressive signals.

 

[adelhide]

i heard them. just rumbelstrutting