SKU: 78142096052

Hazel's Theory of Evolution

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Description

Hazel's Theory of EvolutionWinner of the Lambda Literary Award The Thing About Jellyfish meets Raymie Nightingale in this tender middle grade novel from Lisa Jenn Bigelow, acclaimed author of Drum Roll, Please. Hazel knows a lot about the world. That's because when she's not hanging with her best friend, taking care of her dog, or helping care for the goats on her family's farm, she loves reading through dusty encyclopedias. But even Hazel doesn't have answers for the questions

Winner of the Lambda Literary Award

The Thing About Jellyfish meets Raymie Nightingale in this tender middle grade novel from Lisa Jenn Bigelow, acclaimed author of Drum Roll, Please.

Hazel knows a lot about the world. That's because when she's not hanging with her best friend, taking care of her dog, or helping care for the goats on her family's farm, she loves reading through dusty encyclopedias.

But even Hazel doesn't have answers for the questions awaiting her as she enters eighth grade. What if no one at her new school gets her, and she doesn't make any friends? What's going to happen to one of her moms, who's pregnant again after having two miscarriages? Why does everything have to change when life was already perfectly fine?

As Hazel struggles to cope, she'll come to realize that sometimes you have to look within yourself--instead of the pages of a book--to find the answer to life's most important questions.

--School Library Journal (starred review)

Binding Type: Hardcover
Publisher: HarperCollins
Published: 10/08/2019
ISBN: 9780062791177
Pages: 336
Weight: 0.90lbs
Size: 8.30h x 5.50w x 1.30d

Review Citations: Kirkus Reviews 08/15/2019
Publishers Weekly 09/09/2019
Booklist 10/01/2019 pg. 80
School Library Journal 10/01/2019 pg. 76

Accelerated Reader Quiz #/Name: 508360 / Hazel's Theory of Evolution
Reading Level: 4.7 / Interest Level: Middle Grade / Point Value: 10
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SKU: 78142096052

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Massapequa, US
★★★★★ 4
Not for super chewers
Color: Blue
This ball seems to be of good quality; has held a charge well and is easy to use. Sadly, the cover lasted less than 15 minutes with our dog.... not for aggressive chewers for sure. Pretty funny to watch the hound dog jowls shake though.
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Reviewed in the United States on January 25, 2026
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Jessica S.
Dallas, US
★★★★★ 5
Great fun for dogs!
Color: Orange
Two of our dogs really love this! It caused a lot of barking and chasing and running around trying to grab it. It's really funny to use the remote to control it (and especially make it stop when things get a little too chaotic!) It feels durable even when pawed and bumped into and stepped on. The battery life seems good. I plugged it in overnight to charge so not sure how long it took to charge, but it has lasted quite a while with the dogs playing with it and still doesn't need a charge. It's easy to screw off one side of the ball to plug it in to charge. The size is a little bigger than a tennis ball I would say and has a soft texture.
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Reviewed in the United States on January 6, 2026
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Kathy Stefanski
Carnegie, US
★★★★★ 1
It doesn't work.
Color: Blue
The two halves of the ball shell come apart again and again when the dog plays with them. When it is time to recharge the core, it will not take a charge. The dog loves it, but it's unsafe to play with.
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Reviewed in the United States on January 15, 2026
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Mary Roberts
Bozeman, US
★★★★★ 2
It doesn’t do what is supposed to do
Color: Blue
Wasn’t impressed..,all the ball does is vibrate. It doesn’t really bounce
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Reviewed in the United States on March 6, 2026
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Brittany Manos
Birmingham, US
★★★★★ 5
My dogs fight over it
Color: Orange, Color: Orange
Easy to use, durable, and has a great battery love. At first my dogs were curious and unsure about it, now its become one of their favorite toys. They'll stare at it while its being charged and impatiently wait for it so they can have fun again. Perfect size for most breeds.
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Reviewed in the United States on January 3, 2026

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