The largest toothed animal in the world, it was named for the milky-white substance found in its head
Sperm whales are the largest toothed whales, with adult males measuring up... [DOC] [TLE] Pygmy Sperm whale, it was named after a milky white substance ... [PAR] Pygmy Sperm whale, it was named after a milky white substance found on it's 
head, believed to be sperm, it has the largest brain of any animal on earth, they 
grow ...