"If only it was that simple," Sam said with a sigh.
"What do you mean?" Gail asked in confusion.
"The symbiote survives on a symbiotic relationship with the ecosystem. If every other creature within the surrounding environment is sent away, then the sonic cat would be the direct target of the symbiote.
If my guess is right, based on the size of it, it is already way too strong. The sonic cat would have some trouble to fight it if it goes all out."
"Then it could just flee after sending the other creatures away."
"There is another problem with that too. The symbiote is not exactly a stationary thing. The only reason it didn't expand through the whole forest is that the sonic cat must have been damaging it bit by bit.
It is also partly because of the limited and controlled availability of the small beasts nearby.
They are acting as a source that keeps the hunger of this creature in check.
"So, how far can it expand?"