You know the story of the old woman who was told she would have been baptized decades ago and enjoyed the gospel for all that time if it weren't for a young man's decision not to serve a mission?
You are are to some good dog pining away in a shelter as that missionary was to that woman.
One day after this life, the incredible joy you and that dog could have had together will be revealed to you and you will curse your decision for an eternity — but it's not too late! There's still hope for you!