The Tree

If a tree falls in a forest and no one is around to hear it, does it make a sound? (Why/Why Not)

Scientifically of course, but this is more of philosophical question.

To say there is no sound means "sound" is the experience of hearing, rather than an objective phenomenon.
But then, if I talk to a deaf person (who can't see me), am I not talking?
However, that's not a valid comparison because there's still a sentient actor (me) involved, who besides doing the talking also hears the sound.

It all comes down to semantics, what is your definition of "sound".

Yes. Why not?

If sound is vibrations, then the falling tree certainly does make a sound, because it produces vibrations in the air. Even if there's no person or other animal around to hear the sound, a recorder with a microphone could certainly record those vibrations—as sound.

Yes, it makes a sound and the animals can hear it.