Hi Lizbud and Mary, thank you very much!

About the cables it is truth, sometimes he started to chew the cables of the phone and then I did something(I don't know how to say that, so I'll try as lizbud said "I can express things very well"). Well, when Toro started to chew the cables I grab him behind the neck and said "NO!". And he doesn't understood and continuing to chew the cables and I did the same thing, and then it didn't stop. And I grap him again and said NO and then I left him in the small place in the kitchen and then I left him alone.
I think(correct me if I am wrong) that this way he will associate the NO with something not cool or something bad or boring. And he will associate the no, with the same pull on the neck her mother were accustomed to call his attention.