The short answer: It is not recommended.
The long answer: Hot dogs are grilled or steamed sausages that are made from pork, beef, chicken, turkey, or a combination of meats. They usually contain meat trimmings, fat, flavourings, and preservatives, which are not recommended for your dog. Some flavourings (salt, garlic, and paprika), preservatives (sodium erythorbate and sodium nitrite), and toppings (onions, ketchup, and mustard) commonly used for hotdogs are even poisonous for your pooch.
What to do if your dog accidentally eats a hot dog: Observe your dog for any immediate or gradual changes. If he only consumed one piece without any lethal seasonings, he should be okay. However, if he has eaten a hot dog paired with large amounts of salt, garlic, paprika, or onions, call your veterinarian immediately. Take note of any digestive problems that arise from his hot dog consumption such as stomach ache, vomiting, or diarrhea. If he experiences the runs, provide him with more water so he stays hydrated.
In summary: Low in nutritional value, hot dogs are processed meats that do more harm than good if consumed by your canine companion. Instead of feeding him hot dogs, you’re better off giving him healthy dog treats, cooked vegetables, and fresh fruits.