We just got back from the vet.  She felt the huge mass and goes, "well, that's bizarre!".  It could be a few things...it could be its own cancer (such as hemangiosarcoma), it could be osteosarcoma metastises (she said it's rare to go to organs, but possible), or it could be a benign mass surrounding the liver (she called it something so it does have a name, but I can't remember what it was...).  I wasn't going to take him to the vet, but during our nightly walk I decided to check his urine and I could visibly see blood while he was peeing.  I just freaked!  I guess I imagined his entire insides filled with blood.  His vet is thinking its probably a UTI and he is going back tomorrow for a cystocentesis so they can get sterile urine, but it's funny to me that she was more concerned about that than she was about this gigantic mass in his tummy   So, what does this mean?  Well, the good news is, he still has a large appetite, he's drinking normally, he's still his normal self, he is not pale, he is showing interest in stuff, and he is not in any pain (even when you press on his abdomen).  So nothing is really concerning symptom-wise.  The bad news is that there is a mass...but that's it!  So since I don't want to know what it is, we just let it be.  The plan is to make sure his bladder is OK before he starts a therapy plan, because I guess certain steroid drugs can upset the bacteria and actually make it worse.  The two things that will probably happen are 1) the tumor causes a bleed so large that jack will get so lethargic and just won't wake up, or 2) the tumor gets so large that it pushes his organs causing vomiting and loss of organ function.  GAH!  She seems to think its a tumor of the liver (either benign or malignant) or surrounding the liver which, she said, is a "good" place to get a tumor because of the rebuilding ability of the liver itself.  Bottom line is, right now he's fine and we just have to wait it out

<3 Laura and MassyJack