* melegvérű: They regulate their own body temperature.
* Hajtsa ki fiatalot: Nem tojást tojnak.
* ápolja fiataljaikat: They produce milk to feed their babies.
* Have hair or fur: Though some whales have very little or no hair, they still have follicles and are descended from hairy ancestors.
* Lélegezzen levegőt: Though whales live in the ocean, they need to come to the surface to breathe air.
They also share some similarities in their social structures:
* Herd animals: Mindhárom faj csoportokban él, gyakran összetett társadalmi hierarchiákkal.
* Communicate through sounds: They use a variety of vocalizations to communicate with each other.
While they may seem very different, whales, cattle, and elephants are all part of the same large and diverse family of mammals.