The Komodo dragon 's diet includes invertebrates , other reptiles ( including smaller Komodo dragons ) , birds , bird eggs , small mammals , monkeys , wild boars , goats , deer , horses , and water buffalo . The Komodo dragon 's diet is wide-ranging , and includes invertebrates , other reptiles ( including smaller Komodo dragons ) , birds , bird eggs , small mammals , monkeys , wild boar , goats , deer , horses , and water buffalo .