He weighs 40 lbs and is only on raw dog food! He ate a whole package of meant ore cookies! Is he going to be okay!!

He will probably feel a bit sick and may have diarrhea or vomit but he should be fine... mine have eaten a lot of things they shouldn't.

Signs to watch out for if he has a bad reaction to the ingredients are excessive vomiting (not just once)
Lethargy
Excessive drooling
Whining, panting and pacing

Some dogs can have severe reactions to chocolate, but the amount in cookies is fairly low. Just keep a close eye on him.