The beginning is very emotional and unhappy. Oliver gets very unlucky after the adoptive kitty box gets ripped apart and dragged into the sewer by a huge wave on a very big stormy night. Oliver is very frightened when he doesn't have a box to stay in for the night, when encountering violent and rogue dogs in the alley, and going to sleep by sitting on a pick up truck tire.
Stray dogs growl and chase Oliver which may be frightening to some children.
Syke's dobermans may frighten some children.
The World Trade Center appears in the background in a few scenes. This may prompt questions from children who live in New York City but are unaware of the 9/11 terrorist attacks.