Just a tip some might like to try. My boy had inconsistent poos, one day just right the next soft and runny and very smelly. He hadn't had any changes in diet. Vet reccommended a course of anti-biotics in case of bacterial infection. They did work, however as soon as we finished the course we were back to the start. Found on the net that boiled pumpkin was very good both for the runs and constipation. Use just a half to a teaspoon a day. I found he improved the very next day. I gave it to him for 4 days just a half teaspoon as he only weighs 3.8 kgs. Have never had any more trouble. The boiled pumpkin was much kinder on his system and of course Much Much cheaper than the Vet. Like to add he wasn't showing any other signs of illness. Its worth a try for tummy upsets.