This 7mo cocker spaniel pup was intermittently straining to pass faeces since the owners had rehomed it at 3months; occasionally getting very upset and distressed intermittently when passing any consistency of faeces.  We had variable success with diet and medical management, and proceeded to imaging.  With the colonic loop the loop a consistent finding, we proceeded to ex lap to find it was firmly adhesed and had grown into the circular shape, which was non-reducible even after releasing adhesions.  

Has anyone seen something similar?  Do you think it's congenital or acquired??