Are sharks mammals ?
&
Why is platypus considered a mammal when it lays eggs ?
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So the first thing is that the sharks are not considered as mammals but they belong to Phylum Chordata, the Subphylum Vertebrata and the Class Pisces
1. Platypus is a connecting link between mammals and reptiles . As it has body hairs and some mammary gland but it lays eggs like reptiles .
Therefore the platypus is not only considered as mammals but also reptiles
1. Platypus is a connecting link between mammals and reptiles . As it has body hairs and some mammary gland but it lays eggs like reptiles .
Therefore the platypus is not only considered as mammals but also reptiles
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