An exterminator catches insects and animals. You can usually charge more this way. Hope this helped. :)
Someone who catches animals illegally is called a poacher.
Carnivore or Poacher.
trapper
The person is a poacher.
That would be an ichthyologist.
What do they call someone that catches Beavers
A person that studies animals is called a Zoologist.
snake catcher
The Spine.
herdsman
You call a person who likes animals animal advocate, animal lover, etc.
Falcon
A Trap
Taxonomist.
Tamer