<p>Tiger sharks (<span class="taxon">Galeocerdo cuvieri</span>) prey on fledglings as they swim near breeding islands, eating about 1 in 10 fledglings. Tiger sharks can also attack adults. Polynesian rats (<span class="taxon"><em>Rattus exulans</em></span>) have also been reported to attack incubating adults and nestlings. Adults will protect their nests using their bills. In the main Hawaiian islands, introduced predators such as dogs (<span class="taxon"><em>Canis lupus familiaris</em></span>) have killed Laysan albatrosses and, on Oahu, mongooses (<span class="taxon">Herpestidae</span>) may be a threat.<span> (National Audubon Society and Inc., 2005; Whittow, 1993)</span></p>