Goliath Tarantulas are Fearsome Predators
There's something about spiders that gives most people the creeps, instilling a sense of fear and loathing upon seeing one. It's as though there's a part of the human brain that perceives the form of a spider as dangerous or threatening. Perhaps those deep dark feelings we get when we see a spider are echoes of an ancient human behavioral response known as instinct. Most of the thousands of species of spiders on this earth carry a venom that is virtually harmless to humans, but there are a few species which carry a deadly venom.
Based on primitive human experiences a permanent message has been embedded in our genetic make-up, one that warns us that spider = danger. And when we see a spider that is as large as a dinner plate, we get the creeps big time (or maybe it's just me).