Excellent question! I loooooove Harry Potter...I got into it about 12 years ago in early 2003, the year after I'd been a total LBT fan.
Littlefoot: Watching someone he's close to die.
Cera: Suffering something that says she's weak.
Ducky: Drowning.
Spike: Running out of food.
Chomper: Giving in to his carnivorous side by eating one of his friends.
Ruby: Giving in to
her carnivorous side by eating one of her friends.
Petrie: Pterano murdering his mother and siblings.
Momma Longneck: Losing those she loves.
Grandma and Grandpa Longneck: Losing their grandson and their home on the same day.
Mr. Threehorn: Same as Cera.
Ducky and Spike's mom: Same as Ducky.
Petrie's mom: Pterano murdering her kids.
Mr. Thicknose: The idea of losing his dignity for good.
Mr. Clubtail: Nothing, mwuhahaha!!
Hyp: His father becoming abusive to the breaking point.
Mutt: Being alone.
Nodd: The idea of not having at least some control.
Bron: Losing either of his kids.
Pat: Lava (that foot injury is going to leave some nasty memories
)
Sue: Same as Mutt.
Doc: His mysterious past.
Pterano: Reliving the day he lead the herd to the sharpteeth.
Rinkus & Sierra: Getting struck by lightning.
Ozzy & Strutt: Sharpteeth.
Ali: The idea of racism still existing in the distant future.
Guido: His mysterious past.
Mo: Losing his friends.