My 3-year old Juno came out of heat about 3 weeks ago. Since then, she has been a completely different dog. Very calm, walks right beside me when we go out, no tussling or wrestling with the other dogs, doesn't want to go out as much----almost docile. This is a complete 360 from about a 5 weeks ago. Is this a sign of maturity (finally) or am I experiencing some behavior that is associated with coming out of heat?