I dont know what the person who watches over a graveyard is called I just know that a mortician is somethimes called an Undertaker...
God would be your man for such a job, also known as Jesus Christ.
They are commonly known as caretakers.
Such a person is the Sexton.
cemeterian
Sexton
childcarer
traffic trigger
doctors
Farmer or bison rancher.
This is a manicurist.
Life guard
Grounds keepers
The general name for that field is gerontology.
A parent/guardian
I would call them an aspiring veterinary nurse or an aspiring veterinary surgeon.
Someone who takes care of animals would be a Veterinarian. It could also be a farmer, or a zoologist. Even an animal trainer.
I think you mean a "Valet". (val AY).