"Teacher’S Pet" joke

On the last day of kindergarten, all the children brought presents for their teacher.
The florist’s son handed the teacher a gift. She shook it, held it up and said, “I bet I know what it is? it’s some flowers! ”
“That’s right! ” shouted the little boy.
Then the candy storeowner’s daughter handed the teacher a gift. She held it up, shook it and said “I bet I know what it is? it’s a box of candy! ”
“That’s right! ” shouted the little girl.
The next gift was from the liquor storeowner’s son. The teacher held it up and saw that it was leaking. She touched a drop with her finger and tasted it.
“Is it wine? ” she asked.
“No, ” the boy answered. The teacher touched another drop to her tongue.
“Is it champagne? ” she asked.
“No, ” the boy answered.
”What is it? ”
“A puppy! ”