Sister is overcome with jealousy when Brother gets a shiny new ten-speed bike for his birthday.

Kitty is excited to throw a kitty-corn party but becomes frustrated when newcomer Puppy messes up the decorations, ruins the gift Kitty made, and worst of all, he takes up all of Unicorn's attention.

Norman, a porcupine whose best friend is a tree named Mildred, begins to feel jealous when another tree grows close to Mildred and acts out against the new tree.

Merci Suárez knew that sixth grade would be different, but she had no idea just how different. For starters, Merci has never been like the other kids at her private school in Florida, because she and her older brother, Roli, are scholarship students. They don't have a big house or a fancy boat, and they have to do extra community service to make up for their free tuition. So when bossy Edna Santos sets her sights on the new boy who happens to be...

"Milo loves spending time with his best friend Jay, but when new girl Suzi moves in next door, Milo starts to feel left out, and as his jealousy grows more intense a green-eyed monster pops up beside him, twisting up all of Milo's thoughts and making him feel sad"--

"When Posey's first grade class gets a new student, she worries her friends will like the new girl more than her."--Provided by publisher.

Natalie navigates responsibility and jealousy when she overcommits the Mini Cupcake Club leaving her twin sister Stephanie to save the day.

When a third grade classmate gets her picture in the paper for winning a spelling bee, Judy is determined to find a way to become famous herself

Excitedly attending her friend's birthday party, Sophie becomes jealous when her friend receives a mouse house, a gift Sophie has always wanted.