Hi I have a 5 year old female short-haired dachshund. About 4 years ago I noticed she had a few small lumps on her side, everyone told me that it was nothing serious and that a lot of dogs get it. Lately though the lumps seem to be slowly growing and it's starting to bother her. I'm also worrying a bit that it might be something serious. Going to take her to the vet as soon as possible, but just want to know if anyone on here knows what could be causing the lumps? And if it can be treated in some way? (I attached a few pictures, excuse the camera quality.) Thank you.