How does ReadingList choose similar books?

Matches are ranked by shared themes, shared award and reading-program lists (two books picked for the same state award were chosen by the same committees for the same readers), same genre, comparable Lexile and grade band, and publication decade — computed from cited public curriculum data, not editorial opinion or AI-generated summaries.

Books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship

If you liked The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship, read Ancestory: The Mystery and Majesty of Ancient Cave Art first — the closest match in our database, matched on reading level.

Looking for books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship by Shannon Earle (Nonfiction · grades 3–5)? The 10 titles below are the closest matches in the ReadingList database — each scored on shared themes, genre, and reading level, and each linked to the curricula, states, and grades where it’s assigned, with primary sources.

These are reading-level matches, not just topical ones — so the picks stay grade-appropriate for a grades 3–5 reader. See how we judge text difficulty on our methodology page.

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Why each is a match

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Ancestory: The Mystery and Majesty of Ancient Cave Artgrades 4–8: Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s). Amazon → books like this →
Destiny Finds Her Way: How a Rescued Baby Sloth Learned to Be Wildgrades 3–6: Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s). Amazon → books like this →
Evidence! How Dr. John Snow Solved the Mystery of Choleragrades 3–6: Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s). Amazon → books like this →
Haiku, Ew! Celebrating the Disgusting Side of Naturegrades 3–6: Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s). Amazon → books like this →
Lion Dancersgrades 4–6: Same genre (Nonfiction), overlapping grades (4–6), and the same era (2020s). Amazon → books like this →
Mountain of Fire: The Eruption and Survivors of Mount St. Helensgrades 4–8: Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s). Amazon → books like this →
Narwhal: Unicorn of the Arcticgrades 3–6: Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s). Amazon → books like this →
Spooky Lakes: 25 Strange and Mysterious Lakes that Dot Our Planetgrades 4–8: Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s). Amazon → books like this →
The Dark!: Wild Life in the Mysterious World of Cavesgrades 3–7: Same genre (Nonfiction), overlapping grades (3–7), and the same era (2020s). Amazon → books like this →
The Elephants Come Homegrades 3–8: Same genre (Nonfiction), overlapping grades (3–8), and the same era (2020s). Amazon → books like this →

Books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship for younger readers (K–2)

Closest matches whose grade range overlaps K–2— same scoring, different audience.

Honey, the Dog Who Saved Abe Lincoln by Shari Swanson · grades K–2 — Same genre (Nonfiction) and the same era (2020s).
Yoshi and the Ocean: A Sea Turtle's Incredible Journey Home by Lindsay Moore · grades K–3 — Same genre (Nonfiction), overlapping grades (K–3), and the same era (2020s).
A Friend for Lakota: The Incredible True Story of a Wolf Who Braved Bullying by Jim Dutcher · grades K–3 — Same genre (Nonfiction) and overlapping grades (K–3).
Dewey: There’s a Cat in the Library! by Vicki Myron · grades K–3 — Same genre (Nonfiction) and overlapping grades (K–3).
Good Dog by Maya Gottfried · grades K–3 — Same genre (Nonfiction) and overlapping grades (K–3).

Books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship for elementary readers (grades 3–5)

Closest matches whose grade range overlaps 3–5— same scoring, different audience.

The Fire of Stars by Kirsten W. Larson · grades 4–8 — Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s).
The Longest Shot: How Larry Kwong Changed the Face of Hockey by Chad Soon & Amy Maranville · grades 3–7 — Same genre (Nonfiction), overlapping grades (3–7), and the same era (2020s).
The Mystery of the Monarchs by Barb Rosenstock · grades 4–8 — Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s).
The Oldest Student: How Mary Walker Learned to Read by Rita Lorraine Hubbard · grades 3–6 — Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s).
Volcanoes by Nell Cross Beckerman · grades 3–6 — Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s).

Books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship for middle school (grades 6–8)

Closest matches whose grade range overlaps 6–8— same scoring, different audience.

The Fire of Stars by Kirsten W. Larson · grades 4–8 — Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s).
The Longest Shot: How Larry Kwong Changed the Face of Hockey by Chad Soon & Amy Maranville · grades 3–7 — Same genre (Nonfiction), overlapping grades (3–7), and the same era (2020s).
The Mystery of the Monarchs by Barb Rosenstock · grades 4–8 — Same genre (Nonfiction), overlapping grades (4–8), and the same era (2020s).
The Oldest Student: How Mary Walker Learned to Read by Rita Lorraine Hubbard · grades 3–6 — Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s).
Volcanoes by Nell Cross Beckerman · grades 3–6 — Same genre (Nonfiction), overlapping grades (3–6), and the same era (2020s).

Books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship for high school & teens (grades 9–12)

Closest matches whose grade range overlaps 9–12— same scoring, different audience.

Murder Among Friends by Candace Fleming · grades 9–12 — Same genre (Nonfiction) and the same era (2020s).
Bonnie and Clyde: The Making of a Legend by Karen Blumenthal · grades 9–12 — Same genre (Nonfiction).
The Wife of Bath's Prologue and Tale by Geoffrey Chaucer · grades 11–12 — Same genre (Nonfiction).

Common questions

What books are similar to The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship?: The 10 closest matches to The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship by Shannon Earle on ReadingList include Ancestory: The Mystery and Majesty of Ancient Cave Art, Destiny Finds Her Way: How a Rescued Baby Sloth Learned to Be Wild, Evidence! How Dr. John Snow Solved the Mystery of Cholera, Haiku, Ew! Celebrating the Disgusting Side of Nature, and Lion Dancers. Each is scored on shared themes, shared award lists, genre, and reading level (grades 3–5), and links to the curricula, states, and grades where it is assigned in US schools, with primary sources.
Are books like The Penguin of Ilha Grande: From Animal Rescue to Extraordinary Friendship reading-level appropriate?: Yes — every match is a reading-level match, not just a topical one, scored on Lexile and grade band (grades 3–5), so the picks stay grade-appropriate. See how ReadingList judges text difficulty on the /standard methodology page.
How does ReadingList choose similar books?: Matches are ranked by shared themes, shared award and reading-program lists (two books picked for the same state award were chosen by the same committees for the same readers), same genre, comparable Lexile and grade band, and publication decade — computed from cited public curriculum data, not editorial opinion or AI-generated summaries.

Book data last updated 2026-09-05. Matches are computed from each book’s cited attributes — see the methodology.

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