Andre Norton, The Time Traders
“ He listened to it dully and then, through the ground upon which he lay, Ross felt as well as heard the pounding of hoofs.Hoofs—horses! Horses from over the mountains—horses which might mean danger. His mind seemed as dull and numb as his hands, and it took quite a long time for him to fully realize the menace horses might bring.Getting up, Ross noticed a winged shape sweeping across the disk of the moon like a silent dart. There was a single despairing squeak out of the grass about a hundred feet away, and the winged shape arose again with its prey. ”
