Why can’t babies walk at birth as some animals do?

From the moment of birth a baby can carry out all natural functions, just like any animal’s offspring. However, unlike other species, a human baby cannot walk straight away. This is party because man walks on two legs whereas animals walk on four legs. So it is more different for babies to learn to walk and they have to crawl on all fours first. Man also has a longer life than most animals and he takes longer to grow into an adult. Therefore, the baby stage lasts longer.
Another point is that offspring of animals often have to start looking after themselves when they are very young, so they need to be able to walk as early as possible.