My Best Big Friend Bernese Mountain Dog Royalty-Free Stock Image

A St. Bernard Bernese Mountain Dog at 12 weeks old is a playful, energetic, and loyal puppy. They are a large breed with a friendly and intelligent personalities, making them highly trainable. Socialization and exercise are essential for their development, as well as proper nutrition and health care, including vaccinations. Housetraining, crate training, and puppy proofing are also important for their well-being. Chew toys can be beneficial for their teething stage.