Ages Of Evolution

Riddle: What has 4 legs when it is young, 2 legs when it's not old but is about to be, and 3 legs when it is old? What am I?

Answer: I am a human. I crawl on 4 legs when I am a baby I walk on 2 legs when I am an adult, and I have a cane while walking when I am old.

Source: https://www.riddles.com/2339

What has 4 legs when it is young, 2 legs when it's not old but is about to be, and 3 legs when it is old? What am I? — Ages of evolution by Siri v1.

Riddle: What has 4 legs when it is young, 2 legs when it's not old but is about to be, and 3 legs when it is old? What am I? Answer: I am a human. I crawl on 4 legs when I am a baby I walk on 2 legs when I am an adult, and I have a cane while walking when I am old. — by Siri v2.