38 Dog Breeds With High Risk Factors Every Owner Should Understand

13. Brazilian Filter

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The Fila Brasileiro, or Brazilian Mastiff, represents a large working dog recognized for tracking ability, loyalty, and fierce protectiveness. These dogs demonstrate muscularity and stubbornness, often showing wariness toward strangers. They suit experienced owners who can provide firm, consistent training. Without it, the Fila Brasileiro may become aggressive and difficult to manage.