Aggressive Working Dogs

Want to know more about aggressive working dogs? See all the dogs that fit this criteria and learn more about what it's like to have these dogs as pets.

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  • breed group: working
  • breed size: extra large (101 lbs. or more)
  • other traits: easy to train, easy to groom, prone to health issues, highly territorial, high prey drive, high potential for weight gain, apartment-friendly, strong loyalty tendencies, good hiking companion
  • colors: red, fawn
  • patterns: brindle
  • coat length/texture: short
  • temperament: gentle, friendly, outgoing, playful, aggressive
Bullmastiff dogs are loyal, trusting, and gentle giants that offer not only great companionship, but also intense protection. If you’re fond of big, smart dogs with sweet dispositions, learn more about the lovable bullmastiff.
  • breed group: working
  • breed size: large (61-100 lbs.)
  • other traits: easy to groom, highly territorial, high prey drive, hot weather tolerant, strong loyalty tendencies, good hiking companion
  • colors: white
  • coat length/texture: short
  • temperament: friendly, willful, outgoing, playful, aggressive
Few animals balance fierce protection with friendly playfulness quite like dogo Argentinos. They’re loyal, independent, high-energy dogs that rely on their human companions for support and guidance. Learn how these sporting dogs respond to family life.
  • breed group: working
  • breed size: large (61-100 lbs.)
  • other traits: easy to train, easy to groom, prone to health issues, highly territorial, high potential for weight gain, strong loyalty tendencies, good hiking companion
  • colors: brown / chocolate / liver, black
  • patterns: black and tan
  • coat length/texture: medium
  • temperament: gentle, playful, aloof, aggressive, protective
Rottweilers are smart, hard-working dogs that can be gentle and devoted when trained well. Learn more about living with Rottweilers.