I posted this as a reply to my original post by accident, so incase you didnt see it already I wanted to say thank you all for the advice, encouragement, and tips. WE FOUND HIM THIS MORNING. My lawn guy went searching at 7am, and at 11am he called me and said "somebody wants to come home!" I was absolutely ecstatic. Sulley will be taking no more vacations away from the house. He is in great health, although very dirty, he ate a full meal, and had quite a drink. After a nice warm bath, he is now looking like his old self again, with amazingly not a scratch on him!!!
Thanks again you guys!! 
Leyla x

