For the past two years Sammy and his Ulverstone owner Joanne Cox, 51, have been visiting Multicap Tasmania's Panorama accommodation in Burnie for one hour a fortnight - making people living with severe disabilities smile.

The Delta Society Australia volunteers feature in the not-for-profit organisation's new book,  Dogs That Make a Difference .

``I think Sammy likes it at Panorama because he drags me in the door every time because he gets a lot of attention,'' Mrs Cox said.

``Even with the staff that work at Panorama you can see that they love to see him as well - everyone knew Sammy's name before they knew mine.

``It is a challenging environment for most people . . .   [but] from my point of view it is really rewarding because it is  not  a very big deal for me to go and visit  but it makes a lot of difference for people up there.

``It adds a bit of extra happiness in their daily life.

``There is one gorgeous girl that can be in a bad mood some days and doesn't want to talk to people, but when Sammy comes in she races up to him and wants him to lick her and she just laughs.''

The book features a collection of volunteers' stories and all royalties will go to the Delta Society, which uses pet dogs for therapy in schools, hospitals and institutions.

Aside from the Delta Therapy Dogs program, the society is about to run a Delta Classroom Canines program at the West Ulverstone Primary School to help children improve their reading.

  Sammy will be at the Devonport Bookshop to sign copies of the book on Friday.