Our dog recenctly passed away very unexpectedly, leaving his best friend, Comrade, a much younger dog who has never lived without him. Our late companion helped raise Comrade after we rescued him at 5 weeks old. Comrade is lonely and sad all the time now, and never leaves our sides when we are home. What is the best way to help him cope with this? It is hard enough for us; we don't want him to suffer so much as well.