Yes, Cheerios are generally safe for dogs to eat. However, there are a few things to keep in mind. First, Cheerios contain sugar, so if your dog is diabetic, you'll need to be careful about how many Cheerios he eats. Secondly, Cheerios are made with whole grain oats, which can be hard for some dogs to digest. If your dog has a sensitive stomach, you may want to give him a smaller amount of Cheerios, or mix them with another food. Lastly, some dogs are allergic to wheat, so if your dog is allergic to wheat, he may not be able to eat Cheerios. If you're not sure whether or not your dog can eat Cheerios, talk to your vet.