I Turned on the Garage Light and Saw This Thing on the Wall—Does Anyone Know What It Is?

Their purpose is mostly defensive:

• To make the spider look larger than it really is
• To discourage predators from eating it
• To make it harder for birds and other animals to swallow

In short, it’s a built-in scare tactic.

And it works.

Nature’s “Warning Design”

The bright yellow body also plays a role.

In nature, bold colors often act as warning signals.

They continue reading …