All-Reviews.com - Instinct: Collection of reviews and facts about the movie.
Allwatchers Review - Instinct: Review of the film.
American Humane Association: Review of the way animals were used and treated during filming.
Apollo Leisure Guide: Review of the film.
IMDb - Instinct (1999): List of the cast and crew, plot synopsis, and user comments.
Instinct: Official site with plot synopsis and credits.
Roger Ebert - Instinct: Review of the film.
Rotten Tomatoes: Collection of reviews.
The Nitpickers Site: Instinct: User-submitted bloopers and mistakes.