Array Multidimensi

var herbivora = ['kambing', 'sapi'];
var karnivora = ['harimau', 'serigala'];
var omnivora = ['ayam', 'monyet'];
var binatang = [herbivora, karnivora, omnivora];

console.log('Binatang: ');
binatang.forEach(function(jenis) {
  jenis.forEach(function(spesies) {
    console.log(spesies);
  });
  console.log();
});

binatang[0][0] = 'kerbau';
console.log(binatang)