Usually, it’s the monkeys that you have to watch out for when you go on a trip, whether it’s to Gibraltar or to Lopburi in Thailand. But primates aren’t the only animals prone to attacking tourists. In Venice, seagulls are a real nuisance. And hoteliers have found a surprising way to stop them from bothering visitors: arming guests with a water pistol! While pigeons might annoy you in Paris or London, spare a thought for visitors to Venice, where the birds causing trouble for tourists are seagulls. In 2008, the ban on feeding pigeons allowed St Mark’s Square to cut down on the presence of bird…