What signs or signals should I have caught that might have lured me back to my childhood faith?
You judged God because your dog got himself blinded by not paying attention to the road, and God did not intervene the breach of a law of nature by upending the laws of velocity, impact, and pain caused by the doggie's experience. You, on the other hand, endeared yourself to the dog, which likely gave the poor little fella a lot of joy that you cared for him. God didn't stop the dog from appreciating your acts of love and kindness you gave, even if it was out of pity. Your protective instinct is the proof that God gave the klutzy pup a reason to be cheerful. For the dog, you made his life a better place out of your love. All God did was to let the experience give the dog all he wanted to have--your love, your pity, your caring, and your protection. God let you be the good guy. Can't you see the good that you did for your fuzzy friend? The experience turned you into that canine's hero, and he needed one. You did a good job, and so did God because he knew ahead of time that precious canine would soon be friended, loved, comforted, and the dog would never forget to love you for the rest of his life. You won the heart of what has long been known as man's best friend. You got to be his best friend. Lucky you! Even I thank God for your kindness to a poor little fella who wasn't paying attention to reality. There's more, but you're a smart guy. You'll figure it all out some day.