Researchers have discovered that rats can be taught to use tools, an ability that was previously thought to be the sole domain of primates and some birds. Thanks to ristin for bringing this joyous news to my attention. I can see the comments on Slashdot now: "I for one welcome our new rodent overlords." But it's not like that all! They just want to help with the gardening. (Don't check your compost heap too closely.) higgs_raccoon, being the resourceful raccoon he is, has tracked down the original scientific article which includes videos of the tool-using rodents.