The predator, in this case, a Golden Eagle. The prey? A toddler. A human baby.This happened in Montreal, Canada.
Please note that in the end of the video, along with the cheesy Vangelis music, someone has dubbed in the call of a hawk, probably a Red-Tailed Hawk. A Golden Eagle call can be heard here.
Update: The video might be bogus. Thanks to Borepatch and Walt for the heads-up.