And one more thing you know my dog he is intelligent coz if you search for swiss separd they use in millitary to track bombs and track soilders ,
he cost me fortune over 10 thousand dollors .
i tell you what he can open door, can be quiet to when other dogs bark to track down you and he will not eat from any one else apart from his master , so he is very very inteligent, this dos used in militery to track down ingered soilders.