Through a complex body language. If you want to know what they are feeling, see how they are acting. For example and angry cat will arch it's back.
Well some people use funny voices when a person or animal is making any kind of sound in the story. Some people tell stories to scare other people.
You might try just saying it. Too little comunication can work both ways to cause misery.
it isn't good, it would destroy the plant/animal.
by people destroing them and killing the animal
You can volunteer at your local animal shelter ,vets office,or animal sanctuary. You can also start an animal rescue group.
I get the slight feeling that simply saying "go away" won't get you any good results, since if an animal isn't previously trained to understand the command, simply saying anything would be rather useless.Depends on the animal. Some respond differently to ways of trying to scare them away.
ways to prevent animal attack
Tell the truth. It's simple as that
The ASPCA and its sister organizations (RSPCA et al) can provide information and suggest ways to help. by closing all animal testing factories
Wind, bird droppings, water transport, animal fur, gravity, animal caching
by brocken peices of rock and dead animal flesh
a dog can get rabies by another animal that has rabies biting him.