I've just found out that Jasper is at least partially blind in one eye. I've had my suspicions since I got him because he ran into things full tilt if I'd moved them and he hadn't re-explored. He also rumblestrutts weirdly. When he has playtime wth Jack he rumbles at him whilst moving sideways, obviously so he can watch him out of his working eye. had him at the front door today and thought I would see if I could see his pupils and how well they responded to light changes. Well, one pupil showed no response ad the other only slightly changed. Not quite sure what to do, it doesn't seem to cause him any problems but might take him for a vet check just in case. Poor boy.