First one is the expression she makes
when she's sees a new toy, food or a really good friend of hers
Megs is happy most of the time like most dogs.

Second one is well.. When someone is mean to her
Takes her food or dog toys or says something hurtful, she's a sensitive soul like me.

And lastly third is
well when something that makes her angry happens
One example is an actual human entering her domain without her permission
Or when she gets called bad dog.