The Utopians were the humanoid inhabitants of the Utopian moon. Once existing in a state of bliss and peace, the residents of this world lived in a small colony near a water source. They were invaded by a Goa'uld whose only real ability to control them lay in the consumption of their food. It placed a foreign agent within the plants, which the people consumed, and eventually became so paranoid that they destroyed themselves. (SG1: "Paradise Lost")
While some believe the Utopians may have been Furlings, there have been reports stating that the writers planned for such skeletons to be present but due to expense they simply decided to use normal Human looking ones.