Who, What and Where Am I?

If I am not a boy, I am a?

You walk through me to go in and outside of your home.

I am green and a lot of animals eat me.

I am purple and can be used to make juice.

Nurses and doctors where me when they are doing surgery.

You get this when it's your birthday.

You use me to drink water or juice.

I am round and have all the countries of the world on me.

I have the longest neck in the animal kingdom.

I am one of the Caribbean countries.