Strongest spider

The world's strongest spider is the Californian trap-door spider Bothriocyrtum californicum which has been proved to be able to resist a force 38 times its own weight attempting to open its trap-door: a silken structure covering the entrance to its underground burrow. If the average adult male human being weighs 82kg 180lbs it would be similar to a man trying to keep a door closed which was being pulled on the other side by the weight of a small jet. As a point of reference, even the best olympic powerlifters are only able to lift three times their own bodyweight!