Title: Brehms Tierleben. Allgemeine kunde des Tierreichs
Year: 1911 (1910s)
Authors: Brehm, Alfred Edmund, 1829-1884; Zur Strassen, Otto L. , 1869-; Heck, Ludwig, 1860-; Hempelmann, Friedrich, 1878-; Heymons, Richard, 1867-; Werner, Franz, b. 1867; Marshall, William, 1845-; Bibliographisches Institut Leipzig
Subjects: Zoology; Animal behavior
Source: https://commons.wikimedia.org/wiki/File:Brehms_Tierleben._Allgemeine_kunde_des_Tierreichs_(1911)_(20413855495)_white_background.jpg

The platypus or duck-billed platypus (Ornithorhynchus anatinus) is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. It is one of the extant species of monotremes, the only mammals that lay eggs instead of giving birth.