The Island of Dr. Moreau

The crying sounded even louder out of doors. It was as if all the pain in the world had found a voice.
Book #10 of 20 in the SDE Classics Science Fiction Collection
Shipwrecked in the south Pacific Ocean, Englishman Edward Prendick awakens aboard a ship where a man named Montgomery and his beastly looking servant were transporting animal cargo. Soon, they arrive on an island and more and more of these bizarre humanlike creatures appear. Prendick senses a sinister secret to the island after he meets with the owner, a one Dr. Moreau...