Dogs Must Never Eat Corn Cobs
Plain corn kernels are usually okay for dogs to eat in small, infrequent amounts but the same doesn’t apply to corn cobs. They aren’t considered toxic to dogs but they do pose other major health threats.
Given their very dense texture, it’s very unlikely for dogs to be able to digest the corn cobs. It’s possible for corn cobs to become a choking hazard, especially for puppies and smaller-breed dogs. It’s also possible for corn cobs to become obstruction hazards in the dog’s digestive tract.
If the corn cob pieces are small enough then it will most likely pass along okay but large pieces will be asking for trouble. If your dog accidentally a corn cob then please have a close eye on him for the next several hours. A trip to the vet may be required if your dog starts to show any concerning symptoms such as lethargy and constipation.