 Hi, it's Dr. Lori from Animals Today Radio, and today's Animals Today fun facts are about octopuses. Did you know the oldest octopus fossil was from an animal that lived 296 million years ago? And you can see that fossil at the Field Museum in Chicago. Octopuses have three hearts, one of which supplies blood to the organs, and the other two work to supply the gills. And their blood is a blue color, which transports oxygen better at cold temperatures and in low oxygen waters.