OwlCat

<script>
var owl, cat;
owl= alert("Guess who will the tootsie pop contest, Owl or Cat?");
function Animal(name, speed, focus, min){
	this.name= name;
	this.speed=speed;
	this.position=0;
	this.focus= focus;
	this.run= function(){
		if(Math.random() *10 < this.focus) {
			this.position= this.position + this.speed;
		}
	}
}

owl= new Animal("Suzzie", 1, 10);
cat= new Animal("Kodi", 4, 2);

min=20;
while (owl.position <min && cat < min){
	owl.run();
	cat.run();
	console.log(owl.name + " : " + owl.postition + " , " cat.name + " : " + cat.postition);
}
</script>

I forked this gist, to give you an idea of what to look for:

https://gist.github.com/PlenipotentSS/9200f558f8320a1c1c84