Could someone please recommend a book on dog massage one of ours has severe arthritis,  do attempt my own version on his shoulders & hips but would like guidance? Thank you. 

I have this one -
http://www.dogwise.com/ItemDetails.cfm?ID=dn207
although I confess I haven't tried any of the techniques! I saw it on sale second-hand and thought it might be a good reference book, especially as it has a lot of detailed information about anatomy.