To what degree does a monkey know what a fire truck is, compared to a child? Yes the child might even understand that it's a vehicle, but as far as being a toy

To what degree does a monkey know what a fire truck is, compared to a child? Yes the child might even understand that it's a vehicle, but as far as being a toy is concerned, it's a block with wheels, as long as the monkey is not pretending firefighters come and go from the fire truck (which children also don't do, unless it explicitly included small figurines, functional doors etc) I really don't see the problem.