As platypuses may not be kept as pets, the question is irrelevant. Platypuses feed on tiny invertebrates such as annelid worms, crustaceans and insect larvae. The only places qualified to keep platypuses are some Australian zoos and animal sanctuaries. These places must follow strict regulations for keeping platypuses in captivity.
A young platypus starts to feed on its own after a couple of months.
you give it milk
The platypus should not be called anything else. It is just a platypus. It is not a duckbilled platypus, or any other such misnomer.
Baby platypuses feed on mothers' milk, but the mother does not have teats. Instead, she secretes her milk through glands on her underside, and the young platypus feeds on that.
The platypus is both nocturnal and crepuscular. This means that, while it is active at night, and feeds during the night, it also actively feeds at dawn and dusk.
A platypus digs a burrow in the riverbank for shelter.
Platypus,Rodents,deer,rattlesnakes,gila monsters and Wallaby
Avoid its poisonous spikes on its back leg and don't kill it or try to feed it or capture it! Killing and/or capturing it are illegal everywhere! A platypus will not hurt you if you leave it alone. They are protected by law and should not be approached under any circumstances - for their safety as well as yours.
Since the average person cannot have a platypus, the question is moot. Regarding zoos and animal sanctuaries, costs of running a suitable environment - including equipping it with food - for the platypus are considerable.
Platypuses do feed their young on mothers' milk, but the young do not suckle from teats. The mother platypus secretes milk from glands on her abdomen, which the young platypus drinks, but she does not develop teats.
Whilst the platypus is not actually endangered, it should still be preserved. There is no other animal like them on Earth.
The platypus should not be picked up by its tail. In fact, it should not be picked up at all.