Poor Little Puppy

Today at school, a third grade classroom was taking a bathroom break, and all the students kept telling their teacher that they heard a puppy crying.  The teacher was busy and didn't think anything of it until she was on her break and walked by the backpack that was hanging in the hallway and heard something moving.  A group of us stood by the backpack debating on opening it since we didn't know what could be in there.  Eventually, the principal unzipped the side and out popped a little puppy.  I have never had that happen in 16 years of teaching!  The third grader said her little two year old brother put the puppy in her backpack, and she didn't know about it.  I'm not sure about all that!