blackspot tuskfish
 

Heres a neat posting about a certain type of fish using tools/
blackspot tuskfish.
Also talks about an octopus using a shell as a house.
http://www.treehugger.com/natural-sc...lp-it-eat.html
Scientists are discovering that we are not the only animals to use tools and think this shows a sign of inteligence.

Theres more on that here.
http://www.treehugger.com/natural-sc...es-planet.html