[Blindtlk] Question Regarding Guide Dogs

[hmp]

To Whom It may Concern:
I have a question relating to guide dogs. I am concerned about if 
you walk with a guide dog, can you take someone else with you? Is 
there any problem when two blind people walk with the same dog? 
I'm asking this question because, let's say that, a blind couple 
wants to share the same guide dog while walking together. So, is 
that possible?
Also, is there any guide dogs out there that are especially for 
people who are allergic to dogs, like those hair but not fur 
dogs?