doctors
Life guard
childcarer
traffic trigger
Farmer or bison rancher.
This is a manicurist.
Grounds keepers
The general name for that field is gerontology.
Mama is a person that gave birth to you or the person that takes care of you. Some people call mama as a different name like mommy, mother or mum.
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).