The Time Machine--the often not included "Grey Man" episode. I used to wonder why this rarely
appeared in the text of TIME MACHINE; read somewhere that it was because it was somewhat "disturbing."
(This happened in the WAY distant future, way after the Eloi and the Morlocks.)
"...I became aware of a number of faint-grey things, coloured to almost the exact tint of the frost-bitten soil, which were browsing here and there upon its scanty grass, and running to and fro. I saw one jump with a sudden start, and then my eye detected perhaps a score of them. At first I thought they were rabbits, or some small breed of kangaroo. Then, as one came hopping near me, I perceived that it belonged to neither of these groups. It was plantigrade, its hind legs rather the longer; it was tailless, and covered with a straight greyish hair that thickened about the head into a Skye terrier's mane. As I had understood that in the Golden Age man had killed out almost all the other animals, sparing only a few of the more ornamental, I was naturally curious about the creatures. They did not seem afraid of me, but browsed on, much as rabbits would do in a place unfrequented by men; and it occurred to me that I might perhaps secure a specimen.
"I got off the machine, and picked up a big stone. I had scarcely done so when one of the little creatures came within easy range. I was so lucky as to hit it on the head, and it rolled over at once and lay motionless. I ran to it at once. It remained still, almost as if it were killed. I was surprised to see that the things had five feeble digits to both its fore and hind feetthe fore feet, indeed, were almost as human as the fore feet of a frog. It had, moreover, a roundish head, with a projecting forehead and forward-looking eyes, obscured by its lank hair. A disagreeable apprehension flashed across my mind. As I knelt down and seized my capture, intending to examine its teeth and other anatomical points which might show human characteristics, the metallic-looking object, to which I have already alluded, reappeared above a ridge in the moor, coming towards me..."
http://en.wikisource.org/wiki/The_Grey_Man