Until what age might some American Bulldogs retain pronounced puppy-like behavior?

Answer

Four or five years of age.

The timeline for full mental maturation in the American Bulldog breed can be surprisingly extended, requiring sustained patience from their owners. While they are physically imposing much earlier, the development of sound judgment and stable temperament continues for quite some time. Some reports indicate that individuals within the breed may continue to exhibit pronounced puppy-like behaviors and exuberance well past their juvenile stage, potentially persisting until they reach four or even five years old. This long developmental window underscores the need for consistent leadership and structure throughout their extended adolescence.

Until what age might some American Bulldogs retain pronounced puppy-like behavior?
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