Getting pets onto non building areas

Ok so i got a pet script
vector offset =<-1,0,1>;

startup()
{
vector pos = llGetPos();
llSetStatus(STATUS_ROTATE_Z,TRUE);
llSetStatus(STATUS_PHYSICS, TRUE);
key id = llGetOwner();
llSensorRemove();
llSensorRepeat("",llGetOwner(),AGENT,200,2*PI,.5);
}

default
{
state_entry()
{
startup();


}

on_rez(integer start_param)
{
startup();
}

sensor(integer total_number)
{
vector pos = llDetectedPos(0);
llMoveToTarget(pos+offset*llDetectedRot(0),.3);
llLookAt(pos, .1 , 1);
}
}

But when ever i try and go into a place where your not allowed to build it comes up with a message saying i can move there.

What can i do to solve this problem. i have added that script to a pixar eve that i build as a pet. is there anything i can to so that the pet can move around in the no build maps?

only if you walk into the area, and they allow object entry. otherwise it would have to be an attachment