HuffPo reports on the 1964 World’s Fair in NYC, and claims they correctly predicted:

Robotics: Walt Disney’s “It’s a Small World” exhibit introduced robotic animation in which characters sing, speak and make lifelike gestures…

Here’s a shot from that very exhibit being built, of said lifelike gestures:

Watch for yourself. Seek to 18:50 for the caveman animatronics: