- Universal Pictures
- (United States, 2003)(theatrical)
- Columbia TriStar Film Distributors International
- (Non-US, 2003-2004)(theatrical)
- United International Pictures (UIP)
- (Australia, 2003)(theatrical)
- United International Pictures (UIP)
- (New Zealand, 2003)(theatrical)
- United International Pictures (UIP)
- (United Kingdom, 2003)(theatrical)
- POV Special Effects
- (pre-visualization: USA)
- Industrial Light & Magic (ILM)
- (special visual effects and animation)
- Digital Domain
- (special visual effects and digital animation)
- Sony Pictures Imageworks (SPI)
- (special visual effects and animation)
- Pixel Playground
- (additional composites)
- AFM Lighting
- (lighting)
- Abbey Road Studios
- (score mixed at)
- Air Lyndhurst Studios
- (score recorded at)
- American Humane Association
- (acknowledgement)
- Boone's Animals for Hollywood
- (animals provided by)
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