Studies on octopuses and crabs show that invertebrates are also smart – and sensitive.
On the muddy bottom of the sea, an octopus digs up a coconut shell, tucks it under its arms, and marches away. When he finds a second bowl, he sits in it and pulls the other one over himself as a roof. With the suction cups he holds the bowls from the inside and can open and close them. If he wants to move to another location, he carries both bowls there, one tucked under his right and one under his left arms. With the…
