Wow! There must be at least 550 facts in this book now!! Thanks so much for all the votes and for everyone who gave me facts!! Have a good week!
***
-Blossomfall knew training in the Dark Forest was wrong, but she wanted to become better at fighting so Millie would pay more attention to her.

-Firestar was almost named Firepelt instead of Fireheart.

-Billystorm was named after one of the Erin's cats named Billy that ran away shortly before Into the Wild was written.

-In the Finnish series, Cinderpelt is known as Cinderberry.

-Greystripe was originally going to die in Bramblestar's Storm.

-The painful lump in Tawnyspots's stomach was most likely a cancer tumour.