Sorry for the bombardment of threads, but this isn't concerning the pup for once!
Big dog has got a lump, kind of at the back of her rib cage, but before her leg, if that makes any sense. It's large and hard and doesn't move when I press it. She's very hairy at the minute, so you can't see it, but it must've come up pretty quickly as I noticed it when brushing her, so would've noticed when I last gave her a good brush. She doesn't seem to be in any pain with it, but she has limped on that leg a couple of times in the last few days (only for a few seconds after she's been laying down for a long time) but she does tend to get a little stiff, and she's very bouncy and active when on walks, so I thought maybe she'd just knocked it whilst chasing her ball or something.
She's at the vets on Monday for her booster vac, but should I take her before to get this lump looked at? It's really worrying me :( but it doesn't seem to be bothering her at all. Not sure whether to just keep an eye on it for a day or two and see if it gets bigger, or whether to take her down tomorrow morning.