This is Flip and Bentley (hi Flip! hi Bentley!).
Blind dogs are not uncommon and I've owned one myself. They can be a lot of work so they do not harm themselves. Flip, to his credit, is still a happy dog who seems mostly unaware that he could be heading for disaster if Bentley wasn't there, looking out for him.
I'm thankful for the Bentley's in my life. Those brave souls who've told me I was heading for a dead end, a brick wall - use whatever metaphor you want. Perhaps you've had a friend like that as well.
One metaphor that has stuck with me is how God's Word is the "plum line" of faith. When we don't know if we are off course, His ways will let us know. Do we doubt His love? His Faithfulness? His love endures forever. He wants what is best for us, even if we are oblivious to the danger. How often are we attracted to something/someone/some concept that is in fact, a deceit that brings us harm? It is a kindness to be corrected, even if it is not fun and even embarrassing.
Bentley and Flip will hopefully be good friends for a long time to come. But sometimes our friends do fail us. But God is unchangeable and eternal. We can always run to Him.