Mouth larva usually comes from certain fly species that invade soft tissues inside the oral cavity, such as gums and open wounds. These pests typically infect livestock and other vertebrate ...

The cause is not a common cold, however, but an infestation of fly larvae. 'Snot bots', as they are affectionately known, are the culprits. These are flies of the genus Cephenemyia. The reindeer ...