dont get me wrong, hes gentle as hell to people that i know and bring him around. esp when i walk him and all (need to socialize them) but when hes in the back yard and a car pulls up or someone walks by the fence, he lets them have it. almost like a guard dog. all in all, hes a great dog. awesome personailty, plays well with little kids, but sometimes people get the notion that hes really aggressive by the way he looks. i've had 2 and wont get anything else...