9. Black Widow spider found in bag of GrapesA man from Boston found a living black widow spider in a bag of grapes bought at the Whole Foods Market in Brighton. Jorge Fuertes reached into the bag, pulled out some grapes and saw something black fall out and run away. He thought it was an ant, so he looked in the bag and found a southern black widow spider. He spit out his mouthful of grapes and noticed the spider's telltale red hourglass on its belly. He put it in a yogurt cup and went back to the store to let them know what had happened. A manager told Fuertes the entire shipment of Anthony's brand organic red seedless grapes would be removed from the shelves. In a statement Whole Foods said spiders are part of the landscape at their California grower and "although we are very cautious when unpacking produce, sometimes insects are not detected." A black widow bite is rarely deadly, but its neurotoxic venom is painful. It can bring on muscle cramps, vomiting, and dizziness, especially in young children and the elderly.