I have to say this, I'll be brief.
I am an only child. As a baby, had a Scottie and a Doberman, the Dobie was my age. Both dogs trained for shows. I vaguely remember the Scottie, I'm told she completely tolerated my little baby hands grabbing handfuls of hair, so bless her for that. Count, the Doberman, was my constant companion and in hindsight I wish I would have spent much much more time with him. He had a champion lineage 2 pages long. Very protective of our 5 person extended family. Ate from the hand of a neighbor on one side who fed him treats-barked viciously at the other who used to yell at him. Was always GREAT with me. He passed at 9 years old. :-(
I had a black Lab named Bud from 1990 to 2003. A friend gave him to me when Bud was about 6 months old. I was single and wild, working long hours and days and "playing" hard with what little time i had off. If not for Bud, i wouldn't have made it. I at least had to be responsible for him. His oak urn and ashes will go in my coffin when my dirt nap comes.
I was the last one in the room when we put down our chocolate Lab Cocoa. She was 13, and just walking was difficult for her after 4 years of pain and anti inflammatory meds. She yawned and licked my face when they put her to sleep. That was her kiss goodbye. I had never had to experience that, but as a trainer I had advised people that doing that for their dog that was suffering after all avenues of relief had been tried was the last and greatest act of love they could give their pet. As emotionally painful as it was, she gifted me with that last kiss for my being strong for her in staying behind.
Dogs-pack animals-loyalty and companionship are in their DNA. I love dogs more than I like a lot of people. They deserve more than most people can give, but they'll take what time you can give, and pay you back more than you can match.