>>96029407
I mean, the vine repeats the noises that get it the most food.
So most of the time they eat animals by mimicking mating calls and such.
If they detect human speech they will repeat human speech they have heard.
So if you are just out in the middle of bumfuck nowhere and you hear someone shouting "Help!" or "Hello there!" over and over its probably not human.

If you want to get clever with it sure, you could "train" the vines to say things by shouting something at them then throwing meat at the vines until they do nothing but say that particular phrase.

Also, we got crocodiles, big ones.