Are Lumps under the Dog’s Tail Dangerous?


Swellings and cone-shaped lumps on the bodies of our four-legged friends is a common occurrence faced by pet guardians. They can be found anywhere. Often, a neoplasm occurs at the base of the tail or just below it. Usually, this pathology is a result of a mechanical injury, a reaction to an insect bite, or an infection focal point. But the possibility of a tumor is also possible. In any case, if the lump under a dog’s tail does not go away on its own, grows or changes color, be sure to contact the veterinary clinic at once for an accurate diagnosis and prescription of effective treatment. There are several types of lumps in dogs that can be detected quite often under the tail.

Papilloma and Warts

Lumps of these types when found under the dog’s tail are harmless unless they begin to change color and grow in size. Those are nontender, do not cause itching or any discomfort. Such growths usually appear in animals with weakened immunity system:

  • under dog's tail lumpssenior pets;
  • puppies;
  • those individuals with chronic illnesses;
  • individuals that have recently undergone complex surgery or stress.

Warts and papilloma in dogs are caused by the papillomavirus, which can be transmitted through direct interaction. If the animal’s body cannot fight the causative agent, the dog on its own will not be able to cope with the problem. The main task is to negate the neoplasms timely to prevent their further generalization. When the dog sits down, such lumps tend to become sore, and over time may even digress to malignant growths. Treatment methods:

  1. Medication (Novocain injections).
  2. Operative treatment with subsequent drug therapy.
  3. Freezing of the lump with liquid nitrogen (carefully a few drops should be applied on the wart).
  4. Traditional Remedies (garlic or celandine juice, apple cider vinegar, cautery by means of iodine).

Do not forget to dress the treated part of the body with a clean bandage to prevent infection.

Abscess and Lipoma

A subcutaneous lump under the tail of a dog can occur due to a bacterial infection. Abscesses occur because of bites, injections and wounds. Inflammation is often accompanied by fever and pain. If left untreated, such ulcers may grow in size several-fold in a short time. An abscess is a serious condition and requires expert advice. The following methods are commonly used: surgical (incision and drainage of an abscess is performed under local anesthesia), medicamentary (a course of antibiotic therapy).

Interfacial ulcers break up themselves, subsequent wounds should be treated with hydrogen peroxide.

Lipoma (or fatty tumor) is a benign neoplasm. The growth may form right under the skin or in the connective tissues. Small-sized lumps do not bring discomfort to animals unless they grow in size. It is possible to get rid of a lipoma otherwise then through undergoing a surgery in a veterinary clinic. The lump rarely regresses into a malignant form.

Anal Gland Inflammation

big lumps under dog's tailTwo anal glands are located near the animal’s anus. In the process of defecation the two anal glands secrete a specific substance that upregulates the evacuation. Produced liquid has an unpleasant odor. The older the dog is, the greater becomes the risk of inflammation of these glands. The first symptoms of a disorder are squirming on the floor and frequent licking of the anus. By doing this the animal tries to clean the glands. After some time, a swelling appears under the tail. If you are not too squeamish, try to help your pet. In order to release the glands from accumulated secretions, squeeze the area around the anus with your hands until the fluid appears. Otherwise, insert one finger into the rectum, and press it from the outside with the others, squeezing the liquid out. If all performed well, there will be reduction of swelling. The veterinarian, of course, will carry out these manipulations both faster and effectively.


Often a lump under the dog’s tail may turn out being actually a tumor. There are benign (adenoma, cyst) and malignant morbid growths. If you suspect a tumor in your pet, be sure to contact a veterinary clinic immediately to perform diagnostics as soon as may be and take the necessary treatment steps. Diagnosis may include these procedures:

  • lumps had appeared under dog's tailblood test for tumor markers;
  • biopsy (to detect cancer cells);
  • smear;
  • CT (to determine the extent of damage to neighboring organs).

Benign tumors do not grow into adjacent tissues and do not bring much discomfort to the animal. There are two possible ways of treatment: surgical measures or supervision. If the lump continues to grow, it has to be removed. Having learned that the neoplasm is benign, do not celebrate just yet, the risk of canceration is high. Malignant tumors are treated differently. It includes several methods: surgical excision, chemotherapy, medical exposure.

After passing through all the medical procedures, long-term observation and rehabilitation therapy is always prescribed in order to provide the pet with immune bolstering.

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