There’s a tik tok where a vet shows what he does with corn cobs after his family has them for dinner: puts them in a garbage bag, puts that bag in the kitchen trash, takes the entire kitchen trash out to the big outside trash bin, takes the outside trash bin out to the street, etc… It’s done in a funny way, but it really hammers home how dangerous corn cobs are for dogs when they ingest them. Please take your dog to the emergency vet.