No, you didn't considering none of those are actually sad and just "OMG MY FEELS" crap posts from tumblr. Oh, and if you honestly think that Cyanide and Happiness comic was sad, you should go read their Depressing Comic Week comics.
Wow... that was a bit harsh of a reply to a post intended as a JOKE. Also none of those are from tumblr; several are webcomics; but all were posted to reddit.com/r/FunnyandSad.
Google Amuses me Homer's a good psychologist Dunno, Nicholas Cage? Secretly enjoying other people's compliments
That second one literally just happened to me. I showered my dog and she ran right out on the front lawn to roll in her poop.
HAMSTERS https://www.youtube.com/watch?v=sZpdr8B5kcE https://www.youtube.com/watch?v=JEgvOf7wFBI https://www.youtube.com/watch?v=AQ4OdOy1lFo