My Chester has been gone 10 years now and Polly has been gone about 9. At first, even breathing hurt. Give yourself time. There is no one right way to grieve. Different people have different needs. Sometimes one person will follow a different process for different animals. For me, I kept Polly and Chester's collars / tags and bowls. My mom, who doesn't like dogs, recently bought a cement dog that had angel wings because "it looked like Chester". Chester is now sitting on my front porch wearing the original Chester's collar and tags. I smile every time I see him.