losing a pet:( (I didn't know which group to choose)

So yesterday I had to get my best friend/brother for the last 12 years put to sleep as he got very sick very quickly, they think he had a tumor, I miss him so much💔 we use to do everything together and every morning without fail we would have half an hour in front of the fire before the day even started, can anyone recommend anything to help get over such a loss as I am deverstated and also would you be kind enough to post pics of your doggys as i love seeing puppies/dogs😍