My little dog can get really upset and barks a lot. I don't really care or think it's a bad thing, but others hate it. My only concern is that now that she's getting older, I don't want her to over excite herself over nothing stuff like people walking upstairs or squirrels and birds outside when we go for walks. I want her to warn me when she hears people outside, but she doesn't just warn, she barks ferociously and growls almost until she can absolutely hear nothing else. If I ask her to stop, she will listen, but just growl until the noise goes away. I think it's funny more than anything. She's such a little tough girl, but I am concerned about whether getting over excited is not going to be good as she gets older. I saw a commercial for that sweater or jacket thing that hugs the dogs and tightly or it fits tightly and helps them not be excited. Has anyone used this before? Does it work and should I be concerned about her barking and getting excited as she gets older as being unhealthy?