Hello, I have a 3 year old lab called Poppy. She's a very excitable dog and is usually very bouncy when she meets people on our walks. Having said that, when we have friends/family over to our house, the majority of the time she is incredibly quiet and almost cowers in her bed. If they go near her, you can see the whites in her eyes, her ears go back and she looks incredibly uncomfortable. She's never bitten anyone, but sometimes we have to tell visitors not to pet her too much because you can tell she is uncomfortable - I wouldn't want to push her over the edge and make her feel like she has to bark/bite. We have tried putting her out in the garden when the visitors arrive, but then when she comes in her happy behaviour changes and she leaves the room and displays the nervous behaviour. Can anyone help?