Pretty much agree with Nick above, although at F8 on 48mm, anything wider on the aperture would possibly have caused even more out of focus softness on the Lab, which is borderline atm. I would also suggest that 1/60 is a bit slow, dogs aren't like humans and will move, so if necessary, up the ISO a little and get your shutter speeds up a little bit just in case as the there is also a hint of motion blur on the Lab too. Shooting from further way will in effect increase the relative depth of field so you could open the aperture wider as an alternative. Also, get down a bit lower, to dogs eye level.
Having said all that, a lovely start and definitely heading in the right direction. A good way to get dogs looking at you is as above, have someone to distract them, but get that someone to be immediately behind you, or even wave a treat just above the lens from behind you.