No one knew why, but one day the animals started talking.
Some didn’t have much to say, but now each cat, rat, squirrel, cow or any of the other creatures on earth had a voice with which to say it. Apparently they’d always had thoughts, but one day they found themselves understanding Humans, and making themselves understood by them, though they didn’t know why either.
We thought it would change everything to speak to other species’. Some people even thought we’d stop eating meat.
We didn’t, of course. But the screams of the slaughterhouse did became that much more unpleasant.