No. It is not legal for anyone, in any country, to own a platypus. Special licences are granted for certain zoos and animal sanctuaries in Australia to keep platypuses, but strict regulations must be met to ensure the platypus is kept in a way that completely mimics its natural habitat. Currently, in 2014, no zoos outside of Australia have platypuses.
A young platypus starts to feed on its own after a couple of months.
A platypus eats about the equivalent of its own weight daily.
Yes. When first hatched, a baby platypus can breathe on its own.
It is illegal to own or sell platypus furs. Platypuses are protected animals.
You cannot. To begin with, it is illegal to own a platypus. Secondly, they are innately wild, and cannot be domesticated.
It is not legal to own a platypus anywhere. Specially licensed animal sanctuaries are permitted to keep and breed platypuses, but the creatures require a very specialised, balanced environment. The enclosure is required to be constructed, and proof of the sanctuary's ability to cater for the platypus's unique needs must be demonstrated before a licence is granted.
Platypus venom would certainly be enough to kill a snake - but the snake could well inject its own venom in the platypus at the same time.
The platypus is not made up of any different animals. It is its own animal and its own species.
Yup.
Platypuses are essentially solitary animals.
The platypus is not a mixture of other animals; therefore, nothing is required to keep it together, beyond its own skin.
A platypus is an egg laying mammal, or monotreme. Its actual species name is Ornithorhynchus anatinus.