I generally walk by dog at night, wide open fields with nice paths beside a river.
I've seen owls in the tree's at night, often they take off from the tops as I walk at night and you can see them in the moonlight. I generally walk the trail to the golf course and walk there. Course, I could barely see the outline, but as my dog was running across the course, an owl tried to pick him up, actually did lift and drag him about 4 feet. Good thing my dog was a tad too big and mean for it.
Never even crossed my mind this would happen with this dog, weighs about 12 lb's and a lot of hair. He did have a few puncture marks that my daughter stitched up. However, I think my dog got a few good bites in.
I say owl, don't think it would be a hawk at night, hard to see, cept outline looks like one.