Cat (IMAGE) Ruhr-University Bochum Caption While hardly anyone would dispute that their own cat subjectively feels pain, there are many species for which people are uncertain: do birds, fish, insects and worms have conscious perception? Credit RUB, Marquard Usage Restrictions The image may only be used for reporting about the research by Albert Newen at Ruhr University Bochum. License Original content 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.