It's hard to really know what animals are thinking about, but scientific advances in how we test animals for their levels of intelligence, are proving there is a lot more going on than the simple desire for food or attention.
"I think it is fair to say that literally, monthly, there are fairly major discoveries about things that we long thought were unique to humans, now look like some of the building blocks are in place in other animals," said Harvard professor Marc Hauser
Read full article: CBS News
