Here are some possibilities:
* Chinchilla Breeder: This is the most common title for someone who raises and sells chinchillas.
* Chinchilla Caretaker: This title might be used in a pet store, zoo, or animal sanctuary where someone is responsible for the day-to-day care of chinchillas.
* Chinchilla Veterinarian: A veterinarian specializing in the care of chinchillas.
* Chinchilla Groomer: Someone who specializes in grooming chinchillas, including brushing, bathing, and nail trimming.
* Chinchilla Researcher: A scientist studying chinchillas for research purposes, such as their biology, behavior, or genetics.
* Chinchilla Show Handler: Someone who trains and handles chinchillas for competitions.
* Chinchilla Pet Shop Employee: This title could be used in a pet store that sells chinchillas.
* Chinchilla Educator: Someone who teaches people about chinchillas, such as their care, behavior, and health.
Other options:
* Chinchilla Specialist
* Chinchilla Expert
* Chinchilla Enthusiast
The best title would be the one that most accurately describes the person's specific duties and responsibilities.