couple weeks ago I had to put my mastiff/chow mix Buffy (after Buff Bagwell) down. She had lymphoma, and yes, I balled my eyes out. I had her 10 years, and putting her down was about the hardest thing I have ever had to do.
Occasionally Buddy, my black lab, will run through the house looking for her, and it breaks my heart. He, too, has been rather spoiled since I put Buffy down.- lots of cookies, and those big rawhide chew bones. He misses her a lot, and it is very evident in the way he behaves. I got Buddy as a puppy, and Buffy has been around his whole life. It's hard on both of us.