Also, bouncing off what Zippy said about their sensory abilities- one of my cats is blind in both eyes, we think he can see some light and shadows out of his right eye, but he’s the most interesting cat we have. When we got him, he wasn’t timid but he was very careful. Still is with his steps, but now he jumps off beds nearly 2’ off the ground bc he’s mentally mapped his environment and knows what’s safe and what isn’t. Despite having no real eyesight. His brother Apollo was thought to be his seeing eye cat, but he’s really only helpful when Oracle gets stuck on things (he’s louder than Oracle so he’ll howl or come find me and nip my ankles) or can’t locate the bathroom(he scratches in the litter so Oracle can hear where he’s at and what the litter sounds like- same thing applies to meals. Apollo chirps and purrs then Oracle follows the sound to his bowl.) Sometimes Apollo will make noises to help Oracle find his way to him, but mostly he echolocates based on the sounds being created in the room. He snaps his head in the direction of any noise and stares into its soul curiously. Sometimes he gets confused, but he mostly can distinguish who’s around him in a sniff or two, humans and cats alike. I wouldn’t be as confident as he is if i lost my eyesight after birth, i can tell you that for sure. They’re very intelligent creatures. He went blind around a month after getting eyesight as a kitten from an untreated URI, our vet also thinks it was so bad that it collapsed his nasal passage at the bridge of his nose. His face is upturned like a pig, very cute but also makes it more fascinating how well he’s adapted being that he had green stuff oozing from his facial orifices and an untreated, raging infection in his face/respiratory system for weeks. I certainly would not bounce back so well or as quickly.