My 10-year-old dog has a stomach lump and bloody nipples. What's wrong?

Yes, I would be worried because it's not normal for dogs to have bleeding lumps. It could be a cyst, but in a senior dog, there is always a concern that it's a malignant tumor. I would apply gentle pressure to the lump to try to stop the bleeding, and then have Raya seen by the vet in the morning. The vet can diagnose what is causing the lump, and can discuss treatment options with you. Keep her from licking at it overnight, and you may have to put an Ecollar on her to stop her from doing it. You can get one at a pet store, or can make one yourself: http://dogsaholic.com/care/homemade-dog-cone.html

Hi. This is a very big mass. If it is firm and painful, this is concerning in an unspayed, older pet is cancer unfortunately. Besides a cancer, other possibilities include infection, cyst, lipoma, a benign mammary tumor, hernia, etc. She should be fully checked out and have the mass sampled to get an answer. The sooner the better in this case.

I would recommend that Linda see a vet. The lump may or may not be related to her other signs but vomitting and diarrhea with lethargy can become serious quickly in small breed dogs. Blood in her stool and brown vomitus indicates bleeding in her GI tract so she may be at risk of anemia as well as dehydration. She should be seen asap if she is still vomitting or lethargic and depressed. And mammary cancer is more likely to occur in unspayed females so the lump should be checked out as well. I hope Linda is feeling better soon.

This appears to be a large mammary tumour or mastitis which with her other symptoms is very concerning. She must be assessed by a vet to determine the most appropriate treatment, both conditions can ve life threatening if not treated

As for the bump, my biggest concern would be an enlarged lymph node and mammary cancer. The black stool, lethargy, and thirst are suggestive of bleeding in the intestines. Since she is not spayed, a pyometra would also be a possibility. You need to get her to a veterinarian as soon as possible for bloodwork and abdominal x-rays or ultrasound.

Many mammary tumours shrink temporarily after antibiotics as they often become infected in the centre, intact bitches can also develop mastitis which responds to antibiotics also. I would be concerned the bloodied discharge could be related to a womb infection and would recommend an ultrasound to rule this out. Bleeding around the eye is a warning flag for lymphoma but can occur secondary to many inflammatory conditions, referral to an ophthalmologist would be worthwhile in order to explore all avenues

Poor Gidget! Without being able to see it in person, it is difficult to say for sure. I would have your vet take a look at it since it is hairless. It is likely just a fatty tumor but I have seen a malignant type of skin tumor called a mast cell tumor look like that. Granted, we do have to keep in mind her age. You may decide just to keep her comfortable and make sure the area doesn't get infected and that isn't a wrong decision either. Your vet will be able to determine whether or not it is malignant and also make sure the part that is bleeding isn't going to get infection. A dog her age would have a hard time getting over an infection if left untreated. I hope this helps!