it depends on the room lol.

Happy and Misty follow me everywhere, they cannot be locked out of a room withing whining and trying to open the door.

Electra only follows me when it suits her, I lock her out of rooms all the time, and sometimes she doesnt care, but if she WANTS to follow me, then we have a problem! she will try to break down the barrier, she will whine and scream and carry on.

Rusty follows me everywhere so long as he isnt sleepy, if he wants to be with me then he gets upset about a closed doo and scratches at the door.

Perky has athing about follwing me into the bathroom, its weird, Perky is not even my dog(she's my moms) and she doesnt much like me, but if I go into th bathroom she MUST follow me or she scratches the the door till she drives me nits and I let her in lol.

Ripley doesnt follow me(unless I have food lol) so he really could not care less if I lock him out of a room. my mom on the otherhand...he will get VERY upset and scetch and whine like no tommorow if my mom shuts him out of a room!