Just some kids enjoying the outdoors. Someone must have split a pinata. One of the human kids is helping his aquatic friends get some of the chocolates.
Kids are kids and there's enough chocolate to share. It's the parents you've got to be worried about. "Hanging out with warmbloods again Rexy?" "No he can't visit later! We're going. Now.".
I guess the true power of childhood is not fearing new people. A 5yo family member of mine once got lost in the park, it turns out she had joined a random birthday party (and no-one had blinked an eyelid).
Prompt: "The lost powers of childhood. Group of children in a park next to a rail line, discovering flaws in thez world. Reality is tearing apart and monsters are streaming in, stealing the chocolates." Gen: Bing DALL-E
I was going to argue that he's a sophisticated dino that wears shoes and is just salivating over the orange kid's kitkats, but wow that orange kid does look like food now that I think about it. Sorry kid.