This race took place in Canada, and was luckily captured by racer Tim Bulger. The llama appears to be running next to the peloton, and when the racers make a righthand turn, he breaks up the field.
We can only assume that the llama was working for the two riders who managed to get away after the interruption. The riders left in the chase group, however, appear to then begin drafting the llama, so it evens the score a bit.
As for the llama? I can only imagine it felt something like this..