No, in the wild some mammals have to stand up right when they are born. It is instinct. This is because of preadators that might hunt them down.
Yes. All caribou are mammals.
All seals, including baby harp seals, are mammals.
Milk, just like all baby mammals.
Yes all mammals do.
Like all mammals they get it from their mother.
Yes. Coyotes are mammals, and all mammals drink their mother's milk (if they can).
Yes, all baby gorillas do have an umbilical cord at birth. And that includes all mammals.
Like all mammals, they drink their mother's milk.
All mice have 4 legs. They are mammals.
Yes. This is a feature of all mammals, and if this did not occur, the animal would not be classified as a mammal.
Almost all baby mammals drink milk. Is an elephant a mammal? I think so.
Yes. A gorilla nourishes its baby inside a uterus via an umbilical cord and the baby is born relatively well-developed. All placental mammals, or eutherian mammals, do this.