Mosst animals make very little use of tools. The (highly brainy) Cetaceans don’t seem to use them at all.
More important theories inculude the social brain hypothesis—and sexual selection.
Dolphins have been confirmed as tool-users. For example they are known to use sticks and kelp in mating displays and games.
Cool. An example:
http://news.nationalgeographic.com/news/2005/06/0607_050607_dolphin_tools.html
Mosst animals make very little use of tools. The (highly brainy) Cetaceans don’t seem to use them at all.
More important theories inculude the social brain hypothesis—and sexual selection.
Dolphins have been confirmed as tool-users. For example they are known to use sticks and kelp in mating displays and games.
Cool. An example:
http://news.nationalgeographic.com/news/2005/06/0607_050607_dolphin_tools.html