Select with ability to add new option item on mobile form

I'm not quite sure what kind of form field to use for a mobile app screen. It's for animals where "Breed" is selected from what's already available in the database AND I need to give the user the ability to add a new breed that isn't in the database yet.

I don't know what that field would be called and what could I use to make obvious to the user that they can add a new breed on the fly?