A guardian takes care of his/her ward.
childcarer
A parent/guardian
The person who takes care of orphans is often referred to as a caregiver or guardian. In some contexts, they may also be called a foster parent, social worker, or orphanage director, depending on their specific role and the setting in which they provide care. Their primary responsibility is to ensure the well-being, safety, and development of the children in their charge.
They are called a Menagerie Man.
a tree doctor
It is called a social worker
guardian
The person who takes care of pets would be called a veterinarian (a.k.a vet)
a stablehand
The Purser and his staff, including Stewards
A person who takes care of fish is called an "aquarist" or a "fishkeeper." They are responsible for maintaining the health and well-being of the fish in their care by ensuring they have a suitable environment, feeding them properly, and monitoring their behavior.
A person who minds sheep is called a shepherd - which comes from sheep herder.A person who takes care of sheep - is a shepherd.