shapeshifting

"After the death of her parents, Vivi reunites with her long-lost family and learns more about her heritage as a haguara--a person who can shapeshift into a jaguar"--Provided by publisher.

The girls are dismayed when their teacher is out sick and they have a substitute. Mr. Z makes goofy jokes and can't keep the class under control. Worst of all, he doesn't say anything when mean Darlene makes fun of Kate and Lucie. Luckily, once the girls turn into dogs, Kate and Lucie learn they can save the day--and even make a new friend.

Like other students at Washington Irving Elementary School, Norman has literally become a monster but after learning how to return to normal, he is not sure he wants to give up being a werewolf.

The adopted daughter of two respectable human parents, Kayla is a werecat in the closet. All she knows is the human world. When she comes out to her boyfriend, tragedy ensues, and her determination to know and embrace her heritage grows. Help appears in the lithe form of sexy male werecat Yoshi, backed up by Aimee and Clyde, as the four set out to solve the mystery of a possessed antique carousel while fielding miscast magic, obsessive strangers, and mounting species intolerance.

Conor, Abeke, Meilin, and Rollan's perilous quest for talismans in a blue-water tropical paradise becomes more dangerous when they realize that one of their number is a traitor who has been revealing their locations to their enemies.

When Ragnarok--the apocalypse--threatens, the human descendants of the gods band together to fight monsters, and Matt Thorsen and his friends must journey to the underworld to save a descendant.

Frustrating his sister with his tendency to transform into a monkey whenever he gets hyper, Clyde is given an extra-firm reason to try to control his energetic behavior when a new school principal moves into the neighborhood.

Conor, Rollan, Meilin, and Abeke face an enemy who has been offered the ability to take over the control of a spirit animal, and this power will be used to try and destroy them.

Thirteen-year-old Matt Thorsen of Blackwell, South Dakota is a direct descendent of the order-keeping god Thor, and his classmates Fen and Laurie Brekke are descendants of the trickster god Loki. When the apocalypse threatens, the human descendants of the gods must find Thor's Hammer and shield and fight monsters to stop the end of the world.

Bosque Mar haunts Adne and Logan's dreams, trying to turn Adne to the dark side as he attempts to escape the Nether, where Calla, Shay and the other Guardians trapped him in the final battle of the War of All Against All.