dog problem

Question
My 7 year old cocker spaniel has on occasion loose stool after a normal BM    very occasionally he vomits yellow bile and again on occasion has a grumbling stomach. Otherwise he is very active . No other problems

Answer
I am not sure what your question is here but it sounds like your dog is eating things now and then that don't agree with his digestive system.

Yellow bile and a grumbling stomach are signs of pancreatitis which is a condition where the pancreas becomes very inflamed and essentially starts to digest itself. As you can imagine this is very painful and can be fatal very quickly.

Dog's are not 'made' to eat bits and pieces of human food and when they get a piece of ham or cheese etc that is when they get sick like this. The loose stool is also from the digestive issues.

Cut out ALL people food and put him on a high quality diet, no Purina, no Old Roy etc
He needs a diet that the ingredients do not change in from batch to batch.
Talk to your vet about getting him on a prescription diet for a while then get him on Science Diet light. It has 50% less fat than other foods but is nutrient dense so he won't need to eat as much as he has been either.
Science Diet is made with a fixed formulation unlike other diets on the market nowadays and what that means is that the food stays exactly the same, batch after batch.

So no more treats, no more bites at the dinner table.
If you do this and he continues to have problems then you need to get him into the vet's for a good exam and some blood work.