Monotreme
Order of egg-laying mammals
Summary
Monotremes are mammals of the order Monotremata. They are the only mammals still in existence which lay eggs, rather than bearing live young. The five extant monotreme species are the platypus and the four species of echidnas. Monotremes are typified by structural differences in their brains, jaws, digestive tracts, reproductive tracts, and other body parts, compared to the more common mammalian types. Although they are different from other living mammals in that they lay eggs, female monotremes are like other mammals in that they nurse their young with milk.
Originally created by 200.191.188.xxx
11/13/2001, 5:31:23 PM
Modified
5/11/2026, 7:04:28 AM
Recent revisions
Standardization
Undid revision [[Special:Diff/1343974415|1343974415]] by [[Special:Contributions/~2026-16876-04|~2026-16876-04]] ([[User talk:~2026-16876-04|talk]]) Rv - sentence structure was better before. Unsourced change.
Undid revision [[Special:Diff/1338195947|1338195947]] by [[Special:Contributions/~2026-84908-9|~2026-84908-9]] ([[User talk:~2026-84908-9|talk]]) correct formatting
/* Physiology */ brushing up
(1) a See also section is not mandatory (2) please don't crap up lead with comments like that
Adding species summary table w/ known populations, to link this page to "List of mammals by population."
Restored revision 1322097614 by [[Special:Contributions/~2025-31139-84|~2025-31139-84]] ([[User talk:~2025-31139-84|talk]]): Rv - explained later in paragraph
I changed the line where it says they are the only mammals to lay eggs, since the platypus also lays eggs
corrected grammar
Fixed odd wording.
[[User:AnomieBOT/docs/TemplateSubster|Substing templates]]: {{Format ISBN}}. See [[User:AnomieBOT/docs/TemplateSubster]] for info.
Comment tag without correct end
[[User:Monkbot/task 21: Replace page(s) with article-number|Monkbot/task 21: Replace page(s) with article-number]];
Reverted edits by [[Special:Contributions/139.130.235.226|139.130.235.226]] ([[User talk:139.130.235.226|talk]]): vandalism ([[WP:AntiVandal|AV]])
