Why would a dog be afraid of a 75 yr old that has never raised his voice or done anything to cause fear and is friendly to all other visitors?
Sometimes dogs have a gut feeling and do not like certain
people. Maybe its the way he smells or something also? But I would
just work on the dog to gain his trust as much as you can (the 75yr
old)
That being said, one of my dogs has always been a skittish kind
of dog...and with my grandma who is 85 years old she will back away
from her...always has....maybe its something to do with older
people? hehe I don't know...but just make sure the dog just gets
treated well and train him to trust the person..
One more thing, I have this neighbor who supposedly threw rocks
at one of my other neighbors dogs :@ ...and I always was worried
that something like that would happen with one of my dogs. Anyway,
one day this neighbor was walking down the road and the dogs just
started growling and barking like CRAZY. I mean, you could just
tell that the dogs did NOT like the presence of this person. Very
very telling. The dogs sensed it.