My dog has a hard, raised lump on her leg that isn't shrinking.

Without a physical exam or diagnostics, it is difficult to determine if this is something to worry over. Ideally, a fine needle aspirate or biopsy should be done to collect samples for pathology. This may provide a diagnosis. X-rays of the limb may be recommended to rule out bony involvement. Since you state it is growing, it should be removed before it becomes too large. As it is, that is a difficult area to close after a mass removal.

I recommend to have Pookie examined by the veterinarian. Skin masses can be many things but red raised masses are especially concerning for a skin cancer called a Mast Cell tumor. Your veterinarian will need to collect a sample of cell to examine under the microscope to determine what this is and if further treatment is needed. Have this checked out soon.

Looking at the photo and considering your description of the progression of this, I would suspect that it is a growing mass. It could simply be a fatty lump such as a lipoma. Other possibilities would be a soft tissue swelling due to trauma, but this seems less likely considering the progression. I would head to the vet and get them to test the lump to see exactly what it is. If it is just a lipoma and not causing bother it should not need to be removed.

I can see the small, raised, slightly red hairless lump on Hazel's paw in the photo. This may be a bug bite, localized skin infection, or a mass (which is less likely in younger dogs). I recommend having the area examined by a vet to determine the underlying cause and begin the appropriate treatment. In the meantime, you can get Hazel an E-collar or "cone" to prevent her licking the area and causing further trauma and irritation.

Good Morning, Sorry to see Baby Boo is having problems. This growth looks like it could be a small growth or tumor, especially since it appears raised and ulcerated and is not going away. Normally, your local veterinarian will examine the lesion and perform tests to see if it is in fact cancer, then recommend removal and laboratory tests to confirm what type of growth. In some cases, your veterinarian will simple recommend removal or an excision biopsy to send off for a histopathology report. In all cases, the sooner the growth is examined and removed the better chance of complete removal and complete recovery without it coming back. From my initial view of the picture, it looks like you need to get an appointment and have it check soon, but looks like everything will go great based on the location and age of your dog. Best of luck, and thank you for the question. Steve Popish, DVM.

Without further testing, there is no way to tell if this lesion is due to infection, trauma or allergy, or if it is a mass. Masses can be of a malignant (cancerous) type that can spread elsewhere and/ or invade the healthy tissue around them, or a more benign (noncancerous) type that is unlikely to spread. Cancerous types of masses are far less common than benign ones, but I recommend making an appointment for Chaos to see your vet to have the growth tested and to guide treatment. See the link below for more information on one of the more common types of masses that can look like what Chaos has on his leg. https://veterinarypartner.vin.com/default.aspx?pid=19239&id=4952215

That is a large, lobulated lump (no just one defined lump) in a location that would generally never have something like a swollen lymph nodes. I recommend making an appointment with your vet for a fine needle aspirate (where they aspirate cells from the mass and put them on a slide to be sent out for review) to determine if it is an abscess or a tumor/cancer of some sort. Best wishes for Diesel!