Is this my refrigerator making this noise, or do I have vermin behind it? appliancerepair

Just wanted to see if this is something to be concerned about. The fridge is a Liebherr, I forgot the model name but it's the 24-inch wide model. If the fridge is making that sound, is it something to be concerned about, or is it normal?

Submitted January 29, 2016 at 11:50PM by ohsheeshyall http://ift.tt/1nthkNJ appliancerepair