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It's considered a mammal (generally) because it has hair, mammary glands (nurses it's young), and is warmblooded (keeps a high body temperature).
Remember, classifications for animals were created by humans. You're going to have some of Darwin's oddities fall through the cracks.
The platypus, along with the echidna, fall into their own special group among mammals. They are called monotremes.
What else can I help you with?
What is the special group called when a platypus and echidna?
If you mean genus, e.g. Canines, Felines, etc., then platapusses and echidnas are marsupials
Do mammals have a skeloten?
Yes, all mammals have a skeleton.Yes, all mammals have a skeleton.Yes, all mammals have a skeleton.Yes, all mammals have a skeleton.Yes, all mammals have a skeleton.Yes, all mammals have a skeleton.
Are Brown Bears Fish Or mammals?
Mammals. Mammals.
What is the difference between mammals and non-mammals?
Mammals Have Hair Or Fur, Non-Mammals Don't.
Are we animals or mammals?
We are mammals, and mammals are one category of animal, so we are both animals and mammals.
Are badgers mammals?
yes, badgers are mammals
Does shark belongs to non mammals or mammals?
Sharks are NOT mammals.
Are all sea animals mammals?
No, all sea animals are not mammals. Fishes are not mammals, but dolphins are mammals.
How are American mammals different from Australian mammals?
Most Australian mammals are marsupials unlike American mammals.
Do primates give live birth?
Yes, they are placental mammals. Most mammals are placental. The other two options are marsupial mammals (mammals with a pouch) and monotreme mammals (mammals that lay eggs).
Are chickens mammals or?
They are not mammals
Are you mammals or apes?
We are mammals.
