Frisk will come sit by me and lick away my tears. He seriously makes anything a little better.
Khaith will just suddenly appear and look up at me and meow. If I talk to him, he'll jump in my lap and give my headbumps.
I don't ever remember Melani or Ethan being around when I cry.
Even my rats seem to notice when I'm sad. My rats will all sit at the edge of their cage quietly looking at me(they're usually climbing the sides of the cage begging for me to let them out^^).
The only ones who don't really seem to notice is the mice, syrian hamster, Norri, the pigs, and fish.