Definition of "mammiferous"

The moment of ejaculation in mammiferous animals is accompanied by universal excitement of the whole body, a kind of slight convulsion, which terminates in a comatose or exstatic state.

1837, Michael Ryan, The Philosophy of Marriage, in Its Social, Moral, and Physical Relations; with an Account of the Diseases of the Genito-urinary Organs which Impair or Destroy the Reproductive Function; and Induce a Variety of Complaints; with the Physiology of Generation in the Vegetable and Animal Kingdoms [...], London: John Churchill, Princes' Street, Soho, page 191

The mammiferous secretary slithered in, changed the spool and slithered out again, giving me a small, hygienic smile en route.

1973, Kyril Bonfiglioli, Don't Point That Thing at Me, Penguin, published 2001, page 53