My Rare Pet Dog

His name is 'Marco' a crossed german shepherd. I have only two daughters and I loved this rare creature as my obedient son. Marco understands everything except talking. When my daughters go to school he goes with them to the bus stop and wait there until a bus comes. Then come back home and wags his tail saying they are gone safely. Oh! what a kind hearted son! Before I leave the country I found something like tears in his eyes and skips his meals. My wife writes me when she put my old clothes into the kennel then he sleeps quietly. Oh! my dearest son one day you left us without saying good bye! I am sure somebody must have poisoned you. Who granted this inhuman a soul instead of giving it to a dog? (My dear Marco, my heart still laments for you)