At age 40, I had to personally put down a pet for the first time tonight, and it really sucks. Her name was Angel, she was 16 years old and was the sweetest, most innocent dog I've ever been around.
She had glaucoma, and had recently become anemic, and was starting to have issues with her pancreas and liver. She was having trouble absorbing nutrients from her food, and was beginning to shows signs of being in pain. So tonight was the night. Here she is about 5 minutes before the vet gave her a shot. We had several tests run tonight, and realized it was the right thing to do at this time for her.
I've lost other pets growing up, but there's something different I guess when you are the one making the decision and holding her when she gives her last breath. Really hard.
Well, hopefully someone can reply this with a more positive picture or story because this thread isn't meant to be a downer, and now I regret not starting this thread a long time ago when I had something more uplifting to share.