Short answer
Call a vet immediately — this is an emergency. The dough rises inside the warm stomach and can expand enough to bloat and tear the gut, while the yeast ferments into alcohol and can cause alcohol poisoning. Signs include a swollen, painful belly, wobbliness and vomiting, but call before symptoms start.
Raw bread dough — Food safety facts
Do not feed · Dogs · full breakdown on the linked food page
Emergency. Dough rises in the warm stomach, can cause life-threatening bloat, and the yeast ferments into alcohol — a small ball can cause alcohol poisoning.