Love your DS's list, aquinas. I'll have to see if my no-longer-quite-so-little wants to try some Roald Dahl. Our summer list so far:
- Waggit
- Guardians of Gahoole series
- Warriors (cat series, as well as associated dog (Survivors) and bear (Seekers) series)
- Pegasus series (The Flame of Olympus and following--kind of a Rick Riordan-alike, but enjoyed by my child)
- Redwall series
- The Familiars series (described as for fans of HP and Warriors--bingo!)
- The Call of the Wild

Other than The Call of the Wild, which appears to have been selected by DC on the basis of wolves, you might notice a pattern of fantasy-quest series, preferably with anthropomorphized animals.

I'll admit to having let DC read through all of the HP books at five or six. YMMV, of course, but they didn't seem to be too scary at the time, but that might be because DC heard them all read aloud first, by DC#1 (in a British accent, of course!).

As we're discussing this, I'm reminded of George MacDonald. Those might be appealing too -- The Light Princess, The Princess and the Goblin, etc.

Also agree about the Dragonbreath books! My 7 year old loves them. This summer he also fell in love with the Secret Coders series and the Myth-o-Mania series, which I also enjoyed!

Adding a link to this thread:
Books with strong female characters for 7 year old (2013)

Adding a link to this thread:
High Lexile Level Books for young readers (2011)

The book "People" by Peter Spier (1980) reads more like a graphic novel. The pictures are worth a thousand words. The text is simple, and the illustrations can launch great conversations on diversity.

Amazon link - https://www.amazon.com/People-Peter-Spier/dp/038513181X/

Some reviews indicate the themes may be for older children or adults. https://www.amazon.com/gp/customer-reviews/R39RS3BDDQSWLO/

The book may lend itself to many great conversations with parents.

The book "This is How We Do It," by Matt Lamothe (2017) is a beginner's guide to world studies and diversity, showing a day in the life of seven children around the world.

Amazon link - https://www.amazon.com/dp/1452150184

Continuing with the theme of diversity, adding a link to a post mentioning the book
"The Table Where Rich People Sit,"
in a thread called "Affluenza Concerns."
http://giftedissues.davidsongifted.org/BB/ubbthreads.php/topics/192211/ljoy.html#Post192211

This post provides more detail on the book:
http://giftedissues.davidsongifted.org/B...html#Post248157

Adding a link to a thread discussing books on "perfectionism" for a child about 8 years old: http://giftedissues.davidsongifted.org/B...html#Post225949

Adding a link to a thread with books enjoyed by gifted children of various ages, called what book your kid is reading this week (2011), in the Parenting and Advocacy forum.

"Whoosh!: Lonnie Johnson's Super-Soaking Stream of Inventions" (2016)
Authored by Chris Barton
Illustrated by Don Tate
Link to view on Amazon, including "Look Inside" feature -
https://www.amazon.com/Whoosh-Lonnie-Johnsons-Super-Soaking-Inventions/dp/1580892973

Related post:
Lonnie Johnson, in the thread, "Gifted Adults - applying genius to many endeavors"
in the Age or Ability Specific forum - Adult.