Myth Busting the Truth About Animals and Tools
"A wasp uses a pebble as a hammer. An octopus carries around a coconut shell to hide in. A shrike impales its 
prey on a sharp thorn."
"Those are just a few examples of animal tool use that appear in the new book Animal Tool Behavior by Robert W. Shumaker, Kristina R. Walkup and Benjamin B. Beck. The book updates an edition published in 1980 by Beck. And in the new version, the authors try to dispel a number of persistent myths about animals and tools."
"Shumaker tells me about some of those myths during a walk around The Indianapolis Zoo, where he is vice president of life sciences. (He is also a member of the adjunct faculty at Indiana University.)"