As far as animated films go, the script for Spark: A Space Tail is clunky but inoffensive, falling far short of your average Pixar production creatively but largely sidestepping attempts at tongue-in-cheek “adult” humor in favor of groan-worthy puns à la the title.

Katie Rife

The A.V. Club

It’s hard to imagine that even the least demanding of tykes will ask for a second sampling of this thoroughly second-rate animated feature, which has all the charm, and twice the volume, of a barking dog.

Joe Leydon

Variety

An utterly lifeless and profoundly unoriginal animated effort that is desperately lacking the very thing in its title.

Peter Sobczynski

RogerEbert.com