The Beast of the Moorlands

For years the Moorland Gnomes have been at the whims of the sheep that roam down from the hillsides on occaision to wreak havoc. They tried several methods to try and stop them coming, or protect their homes and farms but to no avail. Eventually a group of rabbit hunters posited a theory, maybe if they killed a few the rest would realise this place was dangerous and stay away. Some people pointed out that it didn't seem to work on the rabbits. "Yeah but rabbits are dumb" was the response "These sheep might be smarter".

Look, if these brave Gnomes want to go out and test their mettle against our enemy, then I say let them. What's the worst that could happen?

— Words that were later regretted

The brave Gnomes did indeed go out to face down their foe and vanquish them. The next bit of the tale is the summary of the report of the last surving member of that brave band of rabbit hunters. They decided to find a lone sheep first, start small as it were, and after a glorious battle in which several Gnomes were injured, they manged to take down the huge beast.
They spent the rest of the day looking after the wounded and coming up with a better battle strategy. That night a thick fog rolled over their camp, which on the Moorlands is a pretty regular occurrence, but the beast that came with it was like nothing the Moorlands had seen before. Three times the size of a sheep, red glowing eyes, huge curling horns which glowed a sickly yellow and a bleat which echoed for miles. It fell upon them as woke from their slumber, trampling with sharp hoves, and battering with a head like a boulder. The Gnomes didn't stand a chance.
The Gnome who had lived to tell the tale said he only survived as he was unconcious under two bodies of his companions who had been thrown across the camp, straight onto him, knocking him out. He awoke to a scene of horror, and ran back to his village as fast as he could.