Man and animal, living together for ages, helping each other and having fun together ...
but the tamer seems to be saying:
what a bad smell he got in his mouth, he should do something about it.

PS
In spite the claim that the bull is terrified in the Jallikattu, you could see that the animal enjoys as much the game, fighting for pleasure with other colleagues on the way out to the exit or returning back to the bull tamers to show off that they are the master chasing everybody away !