Robosquirrel and Snake (image) University of California - Davis Share Print E-Mail Caption A robot squirrel built at UC Davis is being used by SDSU biologists to test how a rattlesnake reacts to tail-flagging signals. Credit Rulon Clark, San Diego State University. Usage Restrictions May be used with acknowledgement of the source. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.