Curiosities: Do mammals lay eggs?

By Eddy Montilla.

PLATYPUS

One of the main characteristics of mammals is that they give birth to live young, and that is why they have mammary glands that produce milk to feed the young. However, if records are made to be broken, rules can be broken too. So, there are two mammals that decided to break them and lay eggs. They are the duckbill platypus, an animal from Australia that can walk or swim and it is half the size of a house cat. The second is the echidna (four different species of echidna lay eggs), also from Australia and New Guinea. It lives on ants and termites and its body is covered with coarse hair and spines.

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