Wow so got to see how they work nice he also is like my best friend..Awww black lab. He's adorable! One of my deaf-blind friends back in college had guide dogs. Her first was a yellow lab- after she retired, the next one was a black lab. I think the third one was also a black lab but never met the last one. Knew of one other deaf-blind woman at Gallaudet who had a black lab also.
Guide dogs for the blind generally are not taught or trained to do that so... no. I don't recall Ripple or Darla doing that at all (and I was around both a lot).Does he also pick up small items that you might drop ?
I think you are right that Service animals aren't to be around other animals or 'double' as a pet... I do know that once retired they can revert to being pets. Ripple (the yellow lab guide dog) was retired and went to live with a friend of the owner. Interestingly I know someone who had an American Eskimo as a pet but trained her as a hearing ear dog (she claimed to have done so...I'm not sure how much I believe it- never saw any visible evidence the dog acted as one...).I got my wife a Black Lab puppy and gave it to her at our baby shower, Labs are very smart and gentle with kids, also get along with other animals.
I know service animals aren't allowed to be with other animals and not for family pets, But the Labs are a great breed and well rounded for the work cut out for them. You will love the gentle giant ! Beautiful dog you have.