Corvids and cetaceans would be good for future study, but I doubt we're in for much of a surprise. This is a study in line with interspecies differences. Intra

Corvids and cetaceans would be good for future study, but I doubt we're in for much of a surprise. This is a study in line with interspecies differences. Intraspecies differences still require some teasing out. E.g., how does a Gauss differ from Joe Q. Public?