The only cetotheriid is a mysterious living fossil.
Despite their name, they have more in common with grey whales than right whales. These mini-whales are rarely sighted in the wild and were even considered extinct until 2012!
They are dark grey on the dorsal side and lighter grey on the ventral side. Still, they are often mistaken for Minke whales because they have a pair of chevron-shaped lighter patches behind the eyes, just like the Minke whales.
The research done by paleontologist Felix Marx in 2012 compared the skull bones of Pygmy right whales with those of extinct cetaceans and found that they are a close relative to the extinct Cetotheriidae. This means the Pygmy right whale is a living fossil. How cool is that?
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Terrestrial / Aquatic
Altricial / Precocial
Polygamous / Monogamous
Dimorphic (size) / Monomorphic
Active: Diurnal / Nocturnal
Social behavior: Solitary / Pack / Herd / Group
Diet: Carnivore / Herbivore / Omnivore / Piscivorous / Insectivore
Migratory: Yes / No
Domesticated: Yes / No
Dangerous: Yes / No