// Initialize dictionary
var dict = {};

// create a key-value pair
dict['hummingbird'] = ["Amethyst woodstar", "Black Inca", "Chilean woodstar", "Crimson topaz"];
dict['dog'] = ["Golden Retriever", "Great Dane", "Siberian Husky", "Mudhol Hound"];
dict['panda'] = ["Red pandas", "Giant Pandas"];

// you can iterate over these keys
Object.keys(dict).forEach(function(key){
	console.log("key is:", key);
	console.log("value is:", dict[key]);
});