Our Resources On Your Mastiff’s First Night Home, Crate Training, Potty Training, and Teaching First Commands
Mastiff Training & Behavior Series
From Puppy to Adult: Understanding Your English Mastiff’s Transition Phase
The transition from puppy to adult in English Mastiffs is gradual, not sudden. Between roughly 6 months and 24 months, behavior, structure, and emotional responses shift significantly. During this time, your dog may alternate between mature, calm behavior and impulsive, adolescent behavior. This is normal.