Weird Noises

[Pocokos]

Hii,

Tonight after feeding my guinea pigs noticed this weird sound that one of them was making while eating.. I heard that they often purr while eating however I dont think this is considered as purring.. could someone please help me out cause I am worried a tiny bit..
He seems fine in general and does everything he usually does. He was treated before from bladder stones and then an infection but he has been well recently.
Also in the recording he is eating so you might hear the demolition of a cucumber slice and his brother moving around

 

[Siikibam]

You’ll have to upload the video onto another host platform such as YouTube. Then you can post the link here.