Short answer
Act quickly, as a whole hot dog is a serious choking and blockage risk for a small dog. First, check that your dog is breathing normally and not in distress. Do not try to induce vomiting unless your vet explicitly tells you to over the phone. The high salt and fat content, combined with the shape, makes this an urgent situation. Call your vet or an emergency clinic immediately to describe what happened and follow their instructions.
Hot dog — Food safety facts
Feed with care · Dogs · full breakdown on the linked food page
Loaded with salt and nitrates, and a serious choking shape for small pets. Tiny pieces only.
The full verdict, portion guidance and serving notes are collected on the Hot dog food facts page.