burping

How common is it and is it normal? I've heard Jake do this a few times and I'm curious and wondering if everything is fine!

Hannah does it each and everytime she eats. I think it's so funny to hear this big kitty burp coming from her little body! We mentioned it to the vet and she thought it was funny but didn't mention that it was anything to be too concerned about.

Callie hardly ever burps, but she does do it occasionally.