How do animals know how to build nests, hunt, or find their way home?
The Invisible Teacher
How do animals know how to build nests, hunt, or find their way home?
A spider has never met its mother. It hatches alone, and yet on the very first try it spins a web so perfect it could win a prize. Nobody taught it. Nobody handed it a blueprint. So how on earth does it know?
The secret is something called instinct. Think of instinct as a set of instructions that come pre-loaded, like a song a bird already knows the moment it's born. These instructions live in DNA — the long chemical recipe inside almost every cell of a living thing. DNA doesn't just decide eye color. It can also shape how a brain is wired before that brain ever sees the world.
