These are very special dogs and are usually returned with great difficulty on the part of the graduate, as they have spent many years together as working partners as well as close friends. (guidingeyes.org)
Some large dog breeds have become incredibly popular pets and working partners today. (avenuedogs.com)
I've had a tough time just trying to sort out what a potential publisher might bring to my work... but as a real working partner, not just a printer. (goodereader.com)