Show I Penguins Penguin's Eyes Shift From Round to Square in Shape I The king penguin pen would have a hard time getting fitted for glasses I should he need them for his pu pu- pupils pupils pils pits are round when fully dilated hexagonal in shape when half di die dilated and square when complete complete- completely ly contracted Cats' Cats eyes shift in shape too I from vertical in bright light to cir cir- circular cirI cir cir- circular I cular in dim light Although the I tame house pet variety of cat usually usually I ally has vertical-slit vertical pupils its wilder brethren such as lions see II with round pupils |