Sam has always loved his food, too much so. Lately what he is doing is gross. On our walks if we come across a dead mouse, bird or frog if i dont see it in time he will pounce and swallow before i can do anything. One of these was a black bird that had been dead a good few days. Surely it cant be good for him. If i happen to find a dead mouse or bird outside the house and move it Sam will still know its been there and will roll on that spot. is this normal behaviour.