I've just photographed Ulli who looks after his disabled owner, Claire. He's a retriver-poodle, an incredible dog with an amazingly close relationship with Claire. He can find anything and bring it to her including her keys, the phone when it rings, the post, slippers etc but he also helps her to get dressed and empty the washing machine.
He's trained by an organisation called Canine Partners. http://www.caninepartners.org.uk/