Flash’s First Day
Initially he was projecting tension and his humans too were tensed, after all it was his first day and there were 40+ dogs.
The pack helped him by making him run so that he can release his tension and they can include him in the pack.
Dogs do start chasing a new dog before including him in the pack to display speed, strength and to let the dog know his place in the pack.
It was a beautiful moment to witness.