My miniature pinscher, Daisy who I believe is about 9, develop two large lumps on each side of her body a few months ago and they have slowly gotten bigger. They are both identical, and are on the same place on each side, above her hips and they're hard, and don't move. Her mood has stayed pretty normal, although very recently she has started acting kind of sluggish, around the same time something weird popped up on her chest, right below her neck on the pointy chest bone thing. It's like it's full of fluid or something. Not a lot, but it's really soft there and looks swollen.If i try to move it around it's like there's a little pocket of fluid, I don't want to describe it as fluid because I don't know if it is, but it's just like really soft. I've attached a few pictures of what the lumps look like.