Yes, until babies are about 8 weeks old.
milk
no
Mammals have fur, skin or hair, and feed their young on mothers' milk.
Platypuses are mammals: therefore, mother platypuses, like all mammals, feed their young on mothers' milk.
Sloths feed their young by nursing them with milk produced by the mother. The young sloth will cling to the mother's belly or back while nursing. Sloths are known to have a slow metabolism, so the milk provides vital nutrients for the growing offspring.
Horses are mammals, so the foal will feed of it's mother's milk.
Up to 18 months
For at least one year
Birds do not feed their young on milk. The lyrebird is a bird, so it does not feed its young milk.
Actually bats nurse their young till they are old enough to feed their self
Parrots do not feed their young with milk.
Spiders don't feed their babies with milk. Baby spiders get their feed by themselves catching small insects and don't need mother's care.