19 hours ago, Bill W said:

Unlike humans, most other animals are precocial from birth or shortly thereafter, and for many it's a matter of survival.  

As if that is not bad enough, add water to the mix, such as with whales, dolphins and porpoises and it is literally, sink or swim, with their first breath of life. For the rest of their lives.

If there's a baby in your house, he's the boss. That's not because he's precocial. It's just how humans work.