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No, but some mammals do lay eggs (see below for more)Seals are mammals and most mammals do not lay eggs. The one exception to this is the platypus. The Platypus is a mammal. Event though a platypus may look like a bird for its bill of a duck and has a duck's webbed feet, it also has hair on it, and it has mammary glands which makes it a mammal. There are only a few egg-laying mammals out there. This question is good for anyone who has questions about platypuses being considered mammals or questions about whether mammals lay eggs.
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Nona Bogan

Lvl 10
3y ago

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