The World's Deadliest Spider Can Tweak Its Venom Depending Its Mood

The potent cocktail of toxins in the venom of one of the world's deadliest spiders seems to vary depending on context.
A new analysis of how funnel-web spiders produce their venom shows that factors such as the spider's heart rate and defensiveness could play a role in the proportions of chemicals delivered on the ends of the fangs of an angry arachnid.
The World's Deadliest Spider Can Tweak Its Venom Depending Its Mood