Bison — Food safety facts
Safe to share · Dogs · full breakdown on the linked food page
Safe cooked and plain, like lean beef.
The full verdict, portion guidance and serving notes are collected on the Bison food facts page.
Short answer
No, this is not an emergency. Plain, cooked bison is safe for dogs, similar to lean beef. Just offer fresh water and keep an eye on your dog for the next few hours. If you notice any unusual vomiting or lethargy, contact your regular veterinarian.