['I was really missing my dog Freddy today. He passed away recently at age 16. He was my constant companion.']
Oh, Im sorry to hear that! I know how hard that can be to lose a loved pet.
We had a very old dog. He wasn't in any pain, and he was enjoying food and human company just as much as always. When it came time for him to pass away, we laid with him on a blanket on the floor until he was gone.