OwlCat

<script>
var owl, cat, whowins, winner;
whowins= prompt("Guess who will the tootsie pop contest, Owl or Cat?");
function Animal(name, speed, focus){
  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("Owl", 1, 10);
cat= new Animal("Cat", 4, 2);

min=20;
while (owl.position <min && cat.position < min){
  owl.run();
  cat.run();
  console.log(owl.name + " : " + owl.position + " , " + cat.name + " : " + cat.position);
}
if (owl.position > cat.position) {
  winner = owl
} else {
  winner = cat
}
if (whowins == winner.name) {
  alert("you guessed right!")
} else {
  alert("better luck next time!")
}
</script>