Lilo asks Cobra Bubbles if he's ever killed anyone, to which he simply says 'We're getting off the subject', thus leaving open the possibility that he has.
Contains mild fantasy violence
The aerial battle sequence at the very end of the movie might be intense for some younger kids. The original air plane sequence was cut due to 9/11.
Realizing laser guns are trained on his genetic material, Stitch spits at a guy to make the lasers shoot at him (and they blow a hole in the wall). The guns then fire at Stitch, as do several guards, but he manages to escape.
Upon landing on Earth, Stitch is promptly run over by a semi-tractor trailer truck, but since he was genetically designed to be super tough, he is no more than knocked unconscious and he loses his guns.
Lilo pounces on Mertle, and strikes her in the face with her fist. The struggle between the two goes on for a few seconds before they are pulled apart. It is later revealed by Mertle that Lilo bit her (though no bite marks or any glimpses of her being bitten are shown).
A rather slapstick scene where Jumba and Pleakley try to ambush Stitch and end up destroying Lilo & Nani's house. If one watches the deleted original version, they will find that is more violent and was deleted due to how dangerous the antics were.