Our large (16'x24'x15') barn with loft has settled considerably in the last year.  Not sure if wildlife digging is responsible?  The barn was installed in 2006 on a 4" gravel pad, and only recently there is noticeable shifting of the front right side. In 2021, we had the corner jacked up and 1/2 ton stone installed, however, that didn't do the trick!  I suspect it needs to be jacked up and leveled more effectively.