Is a squid more intelligent than a chicken?

Asked by ben (9080) October 21st, 2009 from iPhone

While at a restaurant, Andrew and I fell on very different sides of numerous “who’s smarter” comparisons (in reference to animals that are eaten). In general, I think aquatic animals are generally much smarter than people think. Can anyone weigh in: squid v chicken, squid v cow, octopus v cow, tuna v chicken, tuna v cow (also octopus v crow)...