Fancier (noun)

1. A person who has a liking or preference for something, especially a hobby or interest.
2. A person who breeds, raises or shows a particular type of animal or bird as a hobby.

Origin:

From fancy (to have a liking or preference for something) + -er (a suffix indicating a person or thing that performs a particular action).

Examples:

1. He was a dog fancier and had a kennel full of purebreds.
2. She was a plant fancier and had a beautiful garden.
3. The fancy car club was full of car fanciers.
4. He was a train fancier and had a large collection of model trains.
5. The bird fancier showed off his collection of exotic birds.