Onlooker
Observer
Watcher
Viewer
they are called optomistic
A person who looks after cows is called a "cowherd" or a "herdsman."
A person who looks for ancient stuff could be known as an antiquarian.
zookeeper
A mechanic
zookeeper
in India he is called Mahut
shepherd
a forrester
A zookeeper is the person that looks after animals at a zoo. The average salary for a zookeeper in the United States is $35,000 per year.
Usually a person who is called the Sacristan.
Beekeepers look after bees.