Where's the llama?

[wildestranger]

I have just watched the Prisoner of Azkaban and the interview with Professor Lupin and Sirius Black, and there is no mention of a llama! There was discussion of their patronuses (patroni?), and Gary said David would be a deer and David said Gary would be a bird to which Johnny Vaughan with characteristic wit said you mean a woman. But no llama. I was told there would be a llama. Why is there no llama?