Though platypuses lay eggs, they are mammals as they have body hair.
Yes, [platypi] and echidnas are the only mammals who lay eggs.
Dolphins are mammals, therefore they are viviparous. The only exception of this in a mammal is the duckbilled platypypus.
Birds and mammals are mutually exclusive categories of animal. Monotremes (duckbilled platypus and echidna) are sometimes incorrectly said to be "half-bird" because they lay eggs instead of giving live birth, but they share more characteristics with mammals and are classified as such.
Eendbek-dier (Duckbilled-Animal)
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Nothing is made in a mothers stomach. Do you mean womb? A baby hamster is made in the mother hamsters womb, and then born. This proccess is the same with all mammals (apart from duckbilled platypus) including humans.
The duckbilled platypus.
The platypus is known overseas as the "duckbilled platypus" or just the "duckbill", but in Australia it is just commonly called the 'platypus'.The platypus is sometimes known as the duckbilled platypus, because its bill loosely resembles that of a duck, and is of a shape not found on any other mammal.
The platypus does not migrate or hibernate. They remain active all year long and stay close to home as long as food is available to them.
No, they do not swim. Hadrosaurs (duckbilled dinosaurs) are the only ones that swim. Imagine that...a hadrosaur!
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The platypus should not be called anything else. It is just a platypus. It is not a duckbilled platypus, or any other such misnomer.