mammaldom

mammal +‎ -dom

mammaldom (uncountable)

1. (rare) The condition of being a mammal.
   • 1951, Alan Devoe, This Fascinating Animal World, page 4:

     The whole of this vast mammaldom which so dwarfs us is itself no more than a tenth of the entirety of the vertebrates (the backboned animals).

   • 2007 February 20, Natalie Angier, “A Mammal in Winter With a Furnace of Her Own”, in New York Times‎:

     At the museum, visitors are reminded that mammaldom did not confer any major advantages on its earliest practitioners.

   • 2009, Christopher McDougall, Born to Run, page 214:

     But why, in all mammaldom, would a jackrabbit need a spring-loaded belly?

• reptiledom