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They possess the shortest rostrum of current date cetaceans with a skull that is greatly asymmetrical[1]. Dwarf sperm whale skull does not have an independent jugal, has prominent supracranial basin and sagittal septum. The left naris is notably larger than the right one[1]

There are no records of sexual dimorphism among dwarf sperm whales[2]

Juvenile whales appear to spend time at the outer section of the shelf and upper portion of the slope; adults exist in deeper waters [2]

The length of sexual maturity for dwarf sperm whales is estimated to be between 210-220 cm in both females and males[2].

Age of sexual maturity and longevity are unknown [2]

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  1. ^ a b Mcalpine, Donald F. "Pygmy and dwarf sperm whales: Kogia breviceps and K. sima." Encyclopedia of Marine Mammals (Second Edition). 2009. 936-938.
  2. ^ a b c d Willis, Pamela M., and Robin W. Baird. "Status of the dwarf sperm whale, Kogia simus, with special reference to Canada." Canadian Field-Naturalist 112.1 (1998): 114-125.