In some of the cities of the Far East, animals are depended upon as garbage collectors. Hungry dogs and cats, and in some places, even pigs, rove the streets, picking up for food the refuse which is thrown out.
It is no wonder that dreadful diseases break out among the people, is it? How unhealthful our own cities would be if we had no garbage collectors.
What is garbage?
How does the garbage collector help the street cleaner?
Why is the garbage collector one of our important city servants?