18. Gull Dong

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The Gull Dong, a cross between a Gull Terrier and a Bully Kutta, was first bred in colonial India. Aggression has long been noted in the breed. It is not recommended for homes with other dogs, small animals, or young children. Raising this puppy—88–132 pounds—is a major challenge. Highly protective and excellent as guard dogs, their strength and fighting spirit can lead to excessive hostility at home.