Are All Dog Movies Really That Sad?

So at dinner tonight, we were talking about movies/books that disturb us. This came about because Ally had mentioned watching the beginning of "Walk The Line" when the boy falls on the saw. Kurstin plugged her ears and looked horrified, knowing that the image had already made it into her head and there was nothing to be done to remedy the situation. She said she hated stuff like that and cited another example from the book "Where The Red Fern Grows". Ally was confused at first, as she was thinking of "Old Yeller". She then made the loaded statement: "All dog movies are sad." I said, "No they're not. Beethoven's not sad. Air Bud is not sad." Wrong thing to say!!! Apparently, Air Bud is sad. Incredibly so. Wesley's face turned all red and he started telling me about how the guy didn't want Air Bud and he told him to "GO!" and when the dog kept following him he threw a basketball and the dog ran after it and the guy turned and got on a boat and left the dog behind. He was quite distraught as he rattled off this monologue of his, and to my utter shock, TEARS actually began to form in his eyes!!! He was laughing about the situation, but he was also crying at the memory of the poor doggie being rejected. As he continued talking about it, Ally begged him to stop before the tears starting forming in her own eyes! Next time they say all dog movies are sad, I'll just accept it and keep my own opions to myself, lest we have a breakdown on our hands!