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The variety of life on Earth is so cool. Echidnas and the platypus are the only egg-laying mammals, known as monotremes. The average lifespan of an echidna in
by njarboe 8y ago
The variety of life on Earth is so cool.
Echidnas and the platypus are the only egg-laying mammals, known as monotremes. The average lifespan of an echidna in the wild is estimated around 14–16 years. When fully grown, a female can weigh up to 4.5 kilograms (9.9 lb) and a male can weigh up to 6 kilograms (13 lb).[8] The echidnas' sex can be inferred from their size, as males are 25% larger than females on average. The reproductive organs also differ, but both sexes have a single opening called a cloaca, which they use to urinate, release their faeces and to mate.[1]
[1]https://en.wikipedia.org/wiki/Echidna https://en.wikipedia.org/wiki/Echidna