Yep that’s an 11-month-old mastiff. Well spotted!
Here’s my godson puppy, Angus, his brother, Rumor(2 mastiffs)and their brother Logan and Otter(the labs). The mastiffs think they are labs. LOL
http://www.youtube.com/watch?v=1QQzbCmlZM4
Isn’t this fun sharing pics. I just love it.