3CaniBelissimi:

Thank you very much for your suggestion.
I will try to find out the book(s) you recommend and keep you informed.

I love to read, do not be shy if you would like to recommend me books, one that i recommend to everyone i meet is "Intelligence of dogs" from Stanley Coren. This book is always at my bed table.
Another is Dog watching, from Desmond Morris.

Thousand kisses for your 3 piu belli cani.