Bullmastiff vs Keeshond

This is a genetically rooted trait in many Bullmastiffs. While they may coexist peacefully with dogs of the opposite sex, placing two males or two females together often results in severe conflict once they reach social maturity (18–24 months). This aggression is rarely "cured" through training; it is managed.

Bred to track and hold poachers silently without human direction, the Bullmastiff is an independent problem solver. They do not have the "will to please" of a Golden Retriever. If a command does not make sense to them, they will simply ignore it. This is often misinterpreted as stupidity; it is actually a refusal to perform rote tasks without high-value motivation.

While independent in thought, they are physically clingy. They will lean their 120-pound bodies against you, sit on your feet, and follow you from room to room. This constant physical presence can be overwhelming for owners who value personal space.

This is not a dog for a household where everyone is gone 8-10 hours a day. Keeshonds were bred as barge dogs, living in tight quarters with their captains 24/7. They are genetically wired to be with their people constantly. Isolation distress is common; a Keeshond left alone for long periods may bark incessantly, become destructive, or develop neurotic behaviors.

The Keeshond is a watchdog, not a guard dog. Their historical job was to alert the barge captain to anything unusual. In a modern home, "unusual" can mean a delivery truck, a neighbor walking by, or a leaf blowing across the patio. They are vocal and "talkative." While they are rarely aggressive, their piercing bark can be a nuisance in apartments with thin walls if not managed early.

The shedding is not a myth. They "blow coat" (shed their entire undercoat) once or twice a year, resulting in trash bags full of fur. Even outside of shedding season, their double coat requires weekly line-brushing (brushing down to the skin) to prevent painful matting. This is a significant time commitment.