DUCK-MOLE. -- Last among the known mammals is the strange and aptly named Duck-mole. It is web-footed and lays eggs, like a Duck, and burrows in river banks like a Mole or a Beaver, but spends most of its waking moments in the water searching for the aquatic insects and Mollusks which constitute its food. (Ornithorhynchus anatinus.)

Title: Brehm's Life of animals : a complete natural history for popular home instruction and for the use of schools
Year: 1895 (1890s)
Authors: Alfred Edmund Brehm, 1829-1884; Eduard PechuLoesche, 1840-1913; Wilhelm Haacke, 1855-1912; Richard Schmidtlein
Subjects: Mammals; Animal behavior
Source: https://commons.wikimedia.org/wiki/File:Brehm%27s_Life_of_animals_-_a_complete_natural_history_for_popular_home_instruction_and_for_the_use_of_schools_(1895)_(20226780439).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.