Is It Legal To Own A Platypus As A Pet In The Us Is It Legal To Own A Pet Platypus?

Is it legal to own a pet platypus? - is it legal to own a platypus as a pet in the us

I had the idea of Phineas and Ferb on Disney Channel and now I want a! but it is still legal? And how much does a platypus that? Ever It would not only be totally awesome!