Pretty fun game. I like the look of it. You did a great job with the art and animations. The concept and the gameplay are fun and there's a pretty good range of difficulty amongst the children you're chasing. The stamina bar is a good touch.
Some issues I noticed:
When you get a kid who'll help you, it's not really clear HOW they're helping you. They seem to just walk off.
The only real strategy for catching kids is to chase them to the edge where they get stuck, or just go find slower kids. Maybe the kids who help you are supposed to make you faster? I didn't notice that but it would have been a good addition.
Maybe add an indicator on the menu of how many children you've caught already. Not a huge deal just would have been nice.
Overall this is a fun game and could be great with some fixes and additions.