Toothed whale Toothed whale The toothed whales (systematic name Odontoceti) are a parvorder of cetaceans that includes dolphins, porpoises, and all other whales possessing teeth, such as the beaked whales and sperm whales. Seventy-three species of toothed whales (also called odontocetes) are described. They are one of two living groups of cetaceans, the other being the baleen whales (Mysticeti), which have baleen instead of teeth. The two groups are thought to have diverged around 34 million years ago (mya). Toothed whales range in size from the and vaquita to the and sperm whale. Several species of odontocetes exhibit sexual dimorphism, in that
Oh Dear! What Can the Matter Be? the matter be? Oh, dear, what can the matter be? Parents don't visit the school. They visit the circus, they visit their neighbors; They visit their flocks and the servant who labors; They visit the soldiers with murderours sabers; Now, why don't they visit the school? They care for their horses, they care for their dollars; They care for their parties and fancy fine collars; But little, we think, do they care for their scholars; Because they don't visit the school. We know we from hunger and cold are protected; In virtue and knowledge our minds are directed; But still