Is allergic to walnuts

Has a younger sister, Abigail Breslin.

Was discovered at a New York playground at the age of three

According to a December episode of The Tonight Show with Jay Leno, he admitted to giving his best friend of six years actress Skye McCole Bartusiak paper clips and an action figure as a Christmas gift

Was listed as a potential nominee on the 2004 Razzie Award nominating ballot. He was suggested in the Worst Supporting Actor category as well as Worst Screen Couple with co-star Dakota Fanning in the film The Cat in the Hat (2003). He failed to receive either nomination.

In Raising Helen (2004), his on-screen sister was played by his real-life sister, Abigail Breslin.

He and sister Abigail Breslin have an older brother Ryan.

Friends with actress Dakota Fanning.