1. Americans will spend $703m on their pets A record one in five Americans will give gifts to their animals this Valentine’s Day, spending $5.28 on average, which equates to $703 million (£461m), according to a survey for the US National Retail Federation. 2. Lots of St Valentine’s Days You may think there’s only one St Valentine, but it turns out there are quite a few. Two St Valentines are celebrated on February 14, according to Wikipedia – including a Valentine of Rome who was…