My longhaired doxie, Hallie, also went blind overnight from SARDS. I am so sorry this happened to your baby also. It's shocking and so hard when they go blind so quickly, the adjustment period is tough. But Hallie did much better than I dreamed she would (and better than I did!) in fact I taught her to paint to give her something to do and she loved it. Her story went viral and we ended up on many TV and radio shows, magazines around the world, she was on Yahoo, Google, etc home page, celebrity blogs, we did public demos, she won a humanitarian award and we are in a documentary on Animal Planet (Million Dollar Duck). So she had a great life even after going blind. She raised over $35,000.00 in sales of her art work which we donated all to rescue.
Also, you might consider looking into nosework. That was the best thing I did for her after she went blind! Nosework is all about their nose which they use so much more after going blind.It built her confidence a ton and gave her joy again. We ended up competing and she won her first title coming in 8th out of 33 sighted dogs. I'll bet your little one would love it if you can find a class in your area.
and please feel free to email me anytime if there is anything I can help with.
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Also people have been asking for a book on Hallies' life for years I finally got it done not too long ago. Here is the cover that shows her painting, she always wore her little red beret and she often would reach a front paw out to try to feel the paper but her paw wasn't long enough to reach.
Her blindness didn't really slow her down after we adjusted to it, it just became our new normal. <3 I'm sure Sam will do fine!