My 12 week old Parson Russell Terrier has diarrhoea.  He was fine until I took him for his 2nd inoculation and 2 hours later started.  I'm not sure if it was related, the vet says not.  That night he went every 1- 2 hours (very runny).  It then settled down but stools were loose.  I have been feeding chicken and rice since and the vet gave him a kaolin paste.  Last night it all started again.  He is 100% happy otherwise but I don't know why or what to do.  I am off to the vet again today but wondered if anyone had any thoughts

It could be that he's picking up something in the garden that disagrees with his tum, plant chewing can often cause this ;)   Have you tried some Bio Yoghurt ?   it helps to settle their tums really well :)  Just a few teaspoons on his meals (or on its own even ) should do the trick :)

Of course if it doesn't then its back to the vets ;)