I have found this video very late. I am sure millions have seen it. It is good and extremely popular and well publicised.
The kitten is naturally curious of this new species of animal he has never seen before but fails to notice the second lizard behind him and when he sees the lizard he is totally freaked out. He does that classic jump-out-of-the-way manoeuvre so vigorously he falls over when he comes down ;) Very cute.
I suppose some people might find it unfair on the kitten to set up the video like this and it must have been set up to a certain extent. Personally I find it OK. The kitten was never in danger and he has to have some stimulating experiences! This was certainly stimulating.