You'd be forgiven for dismissing jumping spiders as pests, or at best the subject of an amusing macro shot. But it turns out that these tiny arachnids, with brains no bigger than a poppy seed, have ...

For Emily Hess, it was a Phidippus regius named Gretel. Hayden Shea's first was caught by her boyfriend's dad. Sunday Costell ordered her first one off eBay. "I went from selling three to four a week ...