Here's why:
* Breed Standards: The American Kennel Club (AKC) and other breed clubs do not focus on weight as a primary judging criterion. They emphasize overall balance, conformation, and temperament.
* Individual Variation: Like all dog breeds, bullmastiffs have a range of sizes. Weight can be influenced by factors like genetics, diet, and exercise.
* No Central Database: There isn't a central registry that tracks the heaviest bullmastiffs.
General Size Information:
* Male: 130-170 pounds
* Female: 110-130 pounds
It's important to remember that size doesn't necessarily equate to health. A healthy bullmastiff should be well-proportioned and active, regardless of weight.