What is a symbiotic relationship? And how does it work?

Good morning! ~

There are 2 main different kinds of symbiotic relationships.

One being;

A Obligate symbiotic relationship is when 2 animals can not live without each-other. Meaning, they need each-other, or they can't survive.

And two being;

They choose to be together, they don't - need - each-other per-say, but they want to be together.

But in general; its a certain relationship between 2 animals.

Are a special type of interaction between species