A while ago I gave my dog some treats for a couple days of some new chicken treat variety pack. He ended up not eating for 3 days and having the runs all over the basement. Luckily I didn't need to take him to the vet, he slowly started eating again, but from now on I'm playing it safe and buying him the two treats I know will not get him sick: kroger brand raw hides and Pet Supplies Plus bulk dog treats.
Kroger brand raw hides are awesome for anyone interested. They don't fall into a bajillion little pieces and with my dog's sensitive stomach, they can't be any bad for them.