What is the term used to describe a person who owns or maintains an animal?

The term that best describes a person who owns or maintains an animal is "Owner." This designation encompasses the legal and moral responsibilities that come with having an animal in one's care. An owner is typically recognized in both legal and social contexts as the individual who has the ultimate responsibility for the animal's well-being, safety, and care.

While the other terms such as "animal caretaker," "responsible party," and "guardian" may imply involvement or a caring relationship with the animal, they do not universally define the complete ownership and responsibility that the term "owner" encapsulates. The term "guardian" can sometimes denote a more protective or welfare-oriented perspective, but it still does not carry the same legal weight as "owner." This distinction is important for understanding rights, responsibilities, and the implications surrounding animal care and ownership in practice.