Oh, that's The Three Bears.
No, not those three bears. These three bears saw some persons walking on a trail so they are showing their really sharp teeth to scare them away.
Why does this little bear only have a head?
He's the baby bear. They told him to hided by a rock until they made the people get scared and run away. He's holding up a flag so they know he's nice.
That's smart of him. So these are the mom and dad bears?
Yeah. This one's the mom and this one's the dad.
Why are the dad's eyes so BIG?
Well, he got a little scared of the hikers on the trail so the mom bear had to scare them herself. That's why she has red in her mouth.
She is yelling really loud, "STAY AWAY FROM MY BABY YOU HIKERS! AND STOP SCARING DAD BEAR!"