Infants, toddlers, children, juveniles, and adolescents are all classified as kids. But what most people who use this word do not know is that kid does not describe a baby or young human. The first use of the word kid was in Scandinavia back in the 1200's. The term was used to describe a baby or young goat. To this day the word kid means baby goat. It wasn’t until 1590 that the word kid meaning child was used in writing. I searched, and searched, and searched, but I cannot find who, what, and where these writings are and what books and/or author first started using the word kid to mean child. By the 1840's the word kid to describe a child was being used in language. I looked in different dictionaries and encyclopedias and couldn’t find why the word kid started to be used to describe a child. But one thing is for sure the original meaning of kid is baby goat. I am not sure why people started referring to children as baby goats, but I for one do not use the term kid anymore. Unless of course I am referring to a baby goat. Kid is just another vocabulary word Americans misuse on a daily. Maybe you should carry a dictionary around with you and research words before using them.
Photo credit: https://homesteading.com/cute-pygmy-goats-photos/