Will pet friendly motion detector work with my dog?

["Artistry" <fake@xxxxxxxx>]

Hi:

I am pre-wiring my new house under construction.  I have a 76lbs greyhound
that will be moving in with my wife and myself.  I am preparing to run the
4/22 shielded wire for the 8 motion detectors.  Each bedroom will have one
motion detector.  My Living room / Dinning room / Kitchen (open floor plan)
will have 2 detectors with a ceiling that starts at 8 feet and goes up to 10
feet.  Every detector's corner has an 8 foot ceilings.  The alarm system has
yet to be determined, but all the sensors will be hard wired.

Will my dog likely set off the pet friendly detectors if I mount them up
high in the corners?  Or, do I have to mount them down low, 3-1/2 to 4 feet,
to create a "pet ally"?

Is there a particular model detector that would work well up high in the
corners?

Can I leave the detectors up high and put a mask in them to restrict their
lower detection?

What do you think?

Thanks,
John