Animals in the wild found to use running wheel if given the choice
>The researchers claim the animals ran on the wheels because they enjoyed it, which could be a little bit of anthropomorphizing, as no one has been able to prove that animals other than humans experience emotions.<p>Is this really the state of the art? I thought the entire animal rights movement is rooted in the idea that animals can experience emotion<p>This is pretty great research, seeing a slug in a running wheel is particularly silly