Hey rid, good to see you posting again! Welcome back! Yes, I touch and agree with you in that it happens in all life forms. However in the genetic codes there is a disruption in DNA and or RNA formulating correct cellular formation and structure in a normal fashion. Whether it’s the brain , the eyes, the spinal column, facial structures, cloacal formation. There just has to be a genetic/ physiologic explanation. In any case I always appreciate your expertise and this is purely my opinion. Welcome back again buddy.