What Is Parasitic Simbiosis?

A parasitic symbiosis is when two species have a beneficial relationship with each other in an eco system. A fungus that gets into the brains of ants and controls how they behave for the death of the colony is one example. Another example is, there's this type of toxo plasma, right, which it can only survive when it's inside a cat, ok? But the toxoplasma, when it's in cats, is utterly harmless to the cat. It reproduces in the cat. That's a parasitic, symbiotic relationship. And then all the other ants infected with this zamby brain fungus, and the same thing happens to them.