Baby Rabbits Are Not Called Bunnies?

I’m very upset! I asked Shan (for fun) what’s a baby rabbit called. He guessed ‘bunny’. Then he had to go research it and told me that it’s not. He even quoted that www.dictionary.com says that:

1.	Informal. a rabbit, esp. a small or young one.

2.	Slang: Sometimes Disparaging and Offensive. a pretty, appealing, or alluring young woman, often one ostensibly engaged in a sport or similar activity: beach bunny; ski bunny.

3.	Chiefly British. a squirrel.

4.	Australian and New Zealand Slang. a person imposed upon or made a fool of; victim.

–adjective

5. Designed for or used by beginners in skiing: a bunny slope.

I don’t care! Even if it’s informal, that’s what people call baby rabbits. So let’s call them bunnies till it becomes formal. Isn’t that how certain words end up in the dictionary?