oh how true that is. my female is the smartest dog i have ever had. shes an inside dog but i used to keep her outside alot on a chain, she either broke the chain or would twist the chian up to the point that it would break the coller. then i put her in a 7' fence...took her all of 2 days to figure out how to climb out...then she went to just jumping right over that bitch. so i put her on a chain in the fence... break the chain then jump the gate. now shes inside all the time and we have a metal cage that she sleeps in, didnt take her long to figure out how to open that. now i have to put her in the cage and put two snap rings on the cage so she cant get out... i love her but shes a damn pain in the ass sometimes. And i have found that if i make her mad, she will get revenge.