阅读短文,完成下列各小题。
A dog has a piece of meat in his mouth. When he is walking on a small bridge, he looks down and sees himself in the water. He thinks it is another dog. That dog also has a piece of meat in his mouth. He says to himself, “I want to get his meat. Then I can have two pieces of meat.” He opens his mouth to bark at the dog in the water, and his meat falls into the water.
1.What does the dog have in his mouth?
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2.How many pieces of meat does the dog get at last?
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3.Who is in the water? ( )