:)Hi Heather,
Greyhounds are the most loving dogs I have ever seen. I am new to the breed having only had Jessica since mid December and Oz since Feb. 5th. I have been to several events with Jessica and Oz, weill 1 more with Jessica before we got Oz. They are just great with everyone old and young alike. I am not surprise the greyhound you were petting wanted to follow you. They follow those they bond with. They become a like a shadow. I would tell your brother in law he might want to foster a greyhound to see how similar they are to whippets. I think if he is like my husband he will fall in love with the first greyt he meets. My husband was always into big dog but more into German Sheppards, now it is greyhounds for him. He has bonded so much with Oz, it is like seeing a man with his son. We don't have children but Oz just cuddles with him just like a toddler would. You might want to get a greyhound yourself once your beautiful Ranger gets older. Greyhounds like company but I don't think it has to be another greyhound.
Toni