The Knife of Never Letting Go by Patrick Ness

Todd lives on a New World where people can hear each others thoughts and also hear animal thoughts. They call it the Noise. One day Todd hears a space of silence with no Noise. As he investigates, he finds a girl named Viola. There are no girls or women in Prenticetown. When his guardians Ben and Cillan find out, they tell him he must flee. They send him with supplies and a diary of his mother's and tell him, "You must warn them." As he and Viola race to escape the men of Prenticetown who are chasing them, they find that they are being pursued for other reasons that they don't even realize. They come to town after town where the townspeople are afraid and the army is always following them. Those who shelter them are destroyed. When they finally make it to Haven, where they hope to find safety, they find no one except the Mayor of Prenticetown who has been following them. A sequel is to follow.

City of Ashes

Clary Fray just wishes that her life would go back to normal. But what's normal when you're a demon-slaying Shadowhunter, your mother is in a magically induced coma, and you can suddenly see Downworlders like werewolves, vampires, and faeries? If Clary left the world of the Shadowhunters behind, it would mean more time with her best friend, Simon, who's becoming more than a friend. But the Shadowhunting world isn't ready to let her go -- especially her handsome, infuriating, newfound brother,...

Part of the Mortal Instruments series
City of Bone
City of Ashes
City of Glass

Warriors series by Erin Hunter

This series is an animal fantasy with cats. There are four clans:

Thunderclan is the clan of heroes. They are impressive hunters. They live by the lake. They quarrel with the River Clan and are afraid of the Shadowclan.

Shadowclan are evil. They are proud, fight well. They are night hunters and they live in the marsh.

Windclan lives on the moor. They are suspicious and quickly startled. They are fiercely protective. They are a peaceful clan.

Riverclan loves the water. They take prey from the lakes and rivers. Other clans fear and respect them.

Skyclan are the lost warriors, those who have already died.