The introduction of mammal predators such as feral cats, rats, mongooses and even mice can have disastrous results for ecologically nave seabirds.
en.wikipedia.org The marsh mongoose is solitary, spending most active time at night, and crepuscular, though activity has been observed during the day.
en.wikipedia.org It will form groups to attack potential predators, such dogs, mongooses or humans, and at night it roosts colonially.
en.wikipedia.org A secondary threat is introduced predators in the forms of rats, mongoose, and cats which prey on the iguanas and their eggs.
en.wikipedia.org Primary causes of historical population decline are loss and degradation of wetland habitat, and introduced predators such as rats, dogs, cats, and mongooses.
en.wikipedia.org