Where Dog Lymph Nodes

canine lymph nodes diagram

Palpating your dog’s lymph nodes is a crucial part of at-home health monitoring. These small, bean-shaped structures are vital components of the immune system, acting as filters for lymph, a fluid carrying immune cells and waste products throughout the body. Swollen lymph nodes often indicate an infection, inflammation, or, in rare cases, cancer.

Understanding where to find these nodes is key to detecting potential health problems early. Here’s a guide to locating the major lymph node groups in your dog:

  1. Submandibular Lymph Nodes: These are arguably the easiest to locate. Position yourself facing your dog, gently tilting their head upwards. The submandibular lymph nodes are located under the jaw, just behind the angle of the mandible (lower jawbone). They feel like small, slightly mobile bumps. When healthy, they can be difficult to feel, especially in larger dogs.
  2. Prescapular Lymph Nodes: Also called the superficial cervical lymph nodes, these are located in front of the shoulder blades. Run your fingers along the front edge of your dog’s shoulder, about halfway down their neck. You should feel for a small, movable lump nestled near the shoulder. Again, these may be difficult to feel unless they are enlarged.
  3. Axillary Lymph Nodes: These are located in the armpit area. Gently lift your dog’s front leg and feel high up in the armpit region. Locating these can be a bit tricky, particularly in long-haired or overweight dogs, as they are surrounded by muscle and fat.
  4. Inguinal Lymph Nodes: Located in the groin area, these are found where the hind legs meet the abdomen. Gently run your fingers along the inside of your dog’s thigh, feeling for small, movable lumps. Like the axillary lymph nodes, these can be harder to locate due to their position and surrounding tissues.
  5. Popliteal Lymph Nodes: These are found behind the stifle (knee) joint. Gently flex your dog’s knee and feel for a small, bean-shaped structure in the soft tissue behind the joint. These are typically the easiest of the deep lymph nodes to palpate.

How to Palpate: Use a gentle, circular motion with your fingertips. Avoid pressing too hard, as this can be uncomfortable for your dog. Feel for any changes in size, shape, or consistency. Healthy lymph nodes are usually small, smooth, and movable. Enlarged, firm, or painful lymph nodes should be a cause for concern.

What to Look For: It’s essential to establish a baseline of what feels normal for your dog. This is best done when your dog is healthy. Regularly check the lymph nodes so you can recognize any subtle changes. Any noticeable enlargement, tenderness, or change in texture warrants a visit to your veterinarian.

Important Note: While this guide can help you monitor your dog’s health, it is not a substitute for professional veterinary care. If you suspect any problems, consult your veterinarian for a proper diagnosis and treatment plan.

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