You can't blame the cat for trying... or at least just keeping an eye on what appears to be a rather large hawk (or a small eagle? I'm sure someone will be quick to correct me) while it decides to make haste across the road. "Yep, nothing to see here, I better head, nur-ni-nur-ni-nur LEGGIT."
There's a gif of the below doing the rounds this morning on Imgur, but we've tracked down the original video from 2010 on youtube. The cat makes an appearance at the 1:30 mark. Prior to that it's all "astonished onlookers" and the dissection of something icky.