Based on the unpublished children's book Yeti Tracks by Sergio Pablos, the film was co-written and directed by Karey Kirkpatrick, and stars the voices of Channing Tatum, James Corden, Zendaya, Common, LeBron James, Gina Rodriguez, Danny DeVito, Yara Shahidi, Ely Henry, and Jimmy Tatro.

He meets the pilot who saw Migo, and in an attempt to regain his fame, tries unsuccessfully to convince his assistant, Brenda, to dress up as a yeti for filming.

During the trek back up the mountain, Migo and Percy encounter a severe blizzard and are blown into a nearby cave.

Percy breaks free from the rope and films and uploads a video of Migo before attempting to escape.

Realizing that Migo is trying to communicate with him, Percy agrees to go with him, and they head back up the mountain overnight, where they reunite with the S.E.S.

Stonekeeper then reveals to Migo that long ago, the yetis used to live below the clouds but were forced into hiding by the vicious humans who mercilessly attacked them.

Desperate to protect the village and Meechee, Migo reluctantly agrees to continue Stonekeeper's lie, telling the yetis that Percy is just a hairless wild yak.

Migo later discovers that Meechee took Percy to return him home and jumps down the mountain, with Gwangi and Kolka in tow.

Writers Glenn Ficarra and John Requa conceived of Smallfoot, interested in a story about Yeti or Bigfoot; they drew inspiration from an original idea by Sergio Pablos.

[8] The concept for Smallfoot was in development before director Karey Kirkpatrick joined the project in July 2016; he viewed an animatic in which Percy was a "ski bum type" with no motivation on his personality in the first drafts of the script and repetitive gag lines, and so they added more elements in his later revisions by giving arc and depth to his character.

[9] Observing Brexit and a rise in nationalism, Kirkpatrick also drew inspiration: Truth was under attack ... certainly phrases like alternative facts were being thrown around.

[10]On May 11, 2017, it was announced that the film was in-production with Channing Tatum, Zendaya, and Gina Rodriguez providing the lead voice roles.

[11] Ely Henry was originally hired as a scratch vocal for the film four years before its release, however was later invited to join the cast and subsequently voiced Fleem in the final product.

[14] Ryan O'Loughlin, a DreamWorks Animation veteran, was originally the film's director, but was replaced by Kirkpatrick.

[20] In late summer 2018, American pizza chain Chuck E. Cheese's announced that they would be the official partner of the film.

[6] In the United States and Canada, Smallfoot was released alongside Night School, Little Women and Hell Fest, and was projected to gross $25–30 million from 4,131 theaters in its opening weekend.

[5] The film made $6.5 million on its first day, including $850,000 from Thursday night previews, more than the Warner Animation Group's previous September release Storks ($435,000 in 2016).

The website's critical consensus reads, "Smallfoot offers a colorful distraction that should keep younger viewers entertained - and a story whose message might even resonate with older audiences.