I feel like a lot of animals are more intelligent than most give them credit for, and the reason we don't is because for many species (like snakes), they're hard for us to "read" compared to others. With more expressive animals such as dogs it's a lot easier for us to get an idea of what's going through their heads and gauge their smarts accordingly. That and like the study demonstrated, not every species can be tested in the same manner and experiments need to be adjusted for different lifestyles.
Reply With Quote