Firebase EqualTo only returns one record - should return multiple

Referring to the Firebase docs and example located here http://ift.tt/29REpId

Their docs say it should return all dinosaurs who's height is 25. It only returns one.

// Find all dinosaurs whose height is exactly 25 meters.
var ref = firebase.database().ref("dinosaurs");
ref.orderByChild("height").equalTo(25).on("child_added", function(snapshot) 
{
  console.log(snapshot.key);
});

My Data looks like:

dinosaur
   - stega 
       height : 25
   - bronto 
       height : 25

Can someone clarify why I'm only getting one record back if the docs say it should return all?