Our Resources On The First 24 Months, Temperament, Neurological Stimulation, and Early Socialization
Mastiff Puppy Development Series
Why Is My English Mastiff Puppy Sleeping So Much?
English Mastiff puppies sleep significantly more than adult dogs because sleep is essential for rapid growth and neurological development. It is normal for a young Mastiff puppy to sleep 16 to 20 hours per day, especially during the first several months of life.