I've seen two legged dogs before, but it never gets old to see just how they are capable of adapting and getting on with their lives and are still just as happy to see you.
Ain't that a fact! There is a blind dog in my previous apartment complex. She got around without a leash just fine.
The first time I saw her, I thought the pup walked funny. So I chatted up the owner was floored when she said, "Ooh! No hip or leg problems, she's blind, that's all". I almost cried with an overwhelming feeling of inspiration.