Im not sure who actually had written about this,but i think it was Father Seraphim Rose..it stated that animals are closer to the spiritual life than us humans, for they sense the presense of angels,etc. and evil and demons aswell..I know my dog really does know when something isnt right...the reason i write this is, he`s an inside dog of ten years old and he sits and watches me as i stand in prayer at my Icon corner, and to him its become a genuine part of his morning and evening life,to watch me stand in prayer and ask for forgiveness and guidance and sometimes with tears............its just amazing to sometimes look over and catch him in a state of feeling very protected,not by me but because i pray for us all including him too.....and in some strange way he knows this...................