My Female German Shepherd is 4 years old and has been having trouble with going poop and seems to be getting worse. I've taken her to the vet for blood tests and x-rays. Her blood is normal and nothing unusual was seen on the x-rays, however, her large intestine was full of poop. She had a rectal exam and there doesn't seem to be any blockage. She is constantly trying to go and when she does go, her poop is soft and in small nuggets. She continues to eat and play and act totally normal with high energy. I have changed her food, at the vets request, as they seem to think it's a protein allergy. She has had chicken and salmon proteins in the past, but currently she is on a venison protein diet. The vet suggests IBD may be the cause and hopes that the food change will help but STILL NOTHING! Thought? Has anyone else experienced this before? I feel terrible for her.