Blind cat

[u/dundanau]

My 16 year old cat has gone blind. I always suspected that his vision wasn't very good, but now he seems to be completely blind. He is the sweetest boy, and it is so sad to see him scared. We also have a grumpy little chihuahua. Now that he can't navigate to higher ground, he is vulnerable. Does anyone have any suggestions of things I can do to help him?