Horizontal Pupils (video) University of California - Berkeley Share Print E-Mail Loading video... Caption Why do some animals have horizontally elongated pupils? Credit Video produced by Gordon Love, Durham University, in collaboration with UC Berkeley Usage Restrictions Editorial use only with credit. Commercial use prohibited. 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.