Our Dog SAM has a problem with his bowel,his first motion

is very hard and after that it is all soft,we feed him on

dry food soaked in water,we do this to avoid him hurting his throat because he gulps his food down,he is a 7 year old Cocker Spaniel,18kg,very excitable,according to the Vet

he has a slight murmur in his heart,but he is very full of life,slightly deaf untill you mention food!!.

Has anybody got any ideas as what to give him to sort his problem out?.