Some claim an owl can't take a cat because they are too heavy. Not true. They swoop down, and even if the cat is too heavy to fly away with, the way the owl grasps the cat as owl swoops down, their talons puncture the lungs and the owl will then flutter fly along the ground dragging the heavy feline off into the brush to tear it apart.
But, a big owl can lift most average cats if they have a clear path to get back into the air. Watched one of our cats meet it's demise on the powerline easement in front of our old place one night. From 100' away, I could hear the 'whoosh whoosh whoosh' of the owls wings as it never really broke flight and then returned to altitude and a handy tree with kitty screaming below.