[[My kindergartener told me yesterday that he had a "vision" of a dog trying to attack him.... Is this a "normal" thing for a little kid to say? Should I be worried? The scary thing is that I can usually tell when he is lying and I believe that he really thought he saw something. This was just so weird to me... He is my oldest, so maybe this is what kids do and I just don't know about it....]]

This could be a sign that your son may be able to understand what Jesus did on the cross for him. He may be ready to come to repentant faith in Jesus. (if he hasn't yet)

You might tell him there is a difference between a vision and a scary thought in his mind.

Your speaking to him about the love of the Savior and how much Jesus cares for him is great.

I would steer him away from talk of visions etc. and bring him right to scripture, stated simply and the message of the cross.

Praying for you, that the Lord would give you perfect words. Praying for your son and that he may find perfect comfort in Jesus. (point out that Jesus IS called Comforter, Prince of peace!)