Thank you Michael. His cough does seem to be getting better in time and today he is not coughing.
His stools are quite hard and gritty and he is pooing as soon as he can on a walk and has some difficulty in doing the job and it comes out in small pieces - sorry to be so graphic!
He has been off his food quite a bit and he has lost some weight.
We will worm him to see if it helps.
Any further comments would be helpful.