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Monotremes are primitive mammals that lay eggs instead of giving live birth. The figure is taken from San Diego Zoo, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Animals shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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Echidnas lay soft-shelled eggs and produce milk without nipples

Monotremes are primitive mammals that lay eggs instead of giving live birth.

Along with the platypus, the short-beaked echidna belongs to the monotremes, an ancient order of egg-laying mammals. Female echidnas transfer a single leathery egg directly into a temporary pouch, where the hatched leathery pug laps milk secreted directly from skin pore patches.

Where this comes from

San Diego Zoo

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Tags: echidna, monotreme, mammals

Echidnas lay soft-shelled eggs and produce milk without nipples: the short answers

Where does this come from, and can I check it?: Monotremes are primitive mammals that lay eggs instead of giving live birth. The figure is taken from San Diego Zoo, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a animals fact?: Yes. It sits on the Animals shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.