Anthropomorphism

I took my 3 and a half year son to bed. He asked to read the book Big Truck and Little Truck.

He asked an interesting question: "Why do the trucks have eyes and mouthses(sic)?".

I replied that this was anthropomorphism.

The book had an effect on me. Big Truck has an engine failure, and is taken away. Little Truck missed Big Truck a lot. I was very worried that Big Truck would not come back - anthropomorphism indeed.