The toothed whales
) form a suborder
of the cetaceans
. The suborder contains six families
As the name suggests, the suborder is characterized by having teeth
(rather than baleen
as do animals in the other suborder of cetaceans, mysticeti
). Not all species are believed to use their teeth for feeding. For instance, the Sperm Whale is likely to use its teeth for aggression and showmanship.