When you wear a wool sweater, it's hard to remember that a smelly sheep wore it first. When farmers shear sheep, or cut off all the fluffy wool, it's washed, then spun into yarn. But how many sweaters can you get from 1 sheep? One type of sheep, the Rambouillet (RAM-boo-YAY), grows about 4-5 pounds of yarn each year. Since a sweater weighs about 1 pound, that makes about 4 or 5 sweaters. Next time you wear a sweater, just hope the sheep took a bath first.