I’m glad my mini Jack Russell dog is pleasantly plump. We have a fence to keep out the coyotes and wolves, but the eagles and owls are another matter.
Yes. You'd have to raise the fence height to around eight feet and cover the entire yard with chicken wire. That would do the trick but the expense would be considerable.
Oh boy, I lived in a neighborhood in a desert. I had an Alaskan Malamute which had wolf in him. There was a St. Bernard next door and a German shepherd next door to that. Everyone knew to never leave a dog out in a fenced yard at night. A pack of coyotes jumped the fence and all that was left of the German shepherd was an ear.