Energy Level: Somewhat active; an adult Mastiff is content with long walks and a good romp; Good with Children: Yes; Good with Other Dogs: With supervision; Shedding: Occasional; Grooming: Occasional bath and brush; Trainability: Agreeable; Height: 30 inches & up (male), 27.5 inches & up (female) Weight: 160-230 pounds (male), 120-170 pounds (female)