A dumper truck is a big and unique vehicle that helps to carry heavy things, like dirt or rocks. It has a special back that can lift up. This means when it’s time to unload what it’s carrying, the back lifts high and everything falls out! It's like a magic truck that helps build things and move stuff!
The dumper truck is different from regular cars because it can carry lots more weight and it can dump things out easily. Just like how you can dump out your toys from a big box to play with them, a dumper truck can dump out heavy things to help builders do their work!