A scale tells you how much your pet weighs -- BCS tells you whether that weight is healthy.
Start at your level — or read all three. Each level links to the others so you can go deeper or share with someone who needs the basics.
Your vet checks your pet's lymph nodes at every exam -- but do you know why? The lymphatic system is your pet's internal security network, and swollen lymph nodes are its alarm bells.
Read Pet Owner LevelLymph node assessment is a core component of every physical examination. Knowing how to palpate, characterize, and document lymphadenopathy -- and when to escalate -- is an essential vet tech skill.
Read Vet Tech LevelThe lymphatic system is the anatomical scaffold of the adaptive immune response. Understanding lymph node architecture, lymphocyte trafficking, and the molecular basis of lymphoma is foundational to veterinary internal medicine and oncology.
Read Pre-Vet LevelUseful for all levels — bookmark this page for quick access.
| 1-3 | Underweight |
| 4-5 | Ideal |
| 6-7 | Overweight |
| 8-9 | Obese |
| Feel easily with light pressure | Ideal weight |
| Hard to feel, must press firmly | Overweight |
| Visible without touching | Underweight |
| Hourglass waist from above | Ideal |
| No visible waist | Overweight |
| Abdominal tuck from side | Ideal |
| Sagging belly | Overweight |
| Diabetes | High risk |
| Osteoarthritis | High risk |
| Heart disease | High risk |
| Shortened lifespan | Up to 2 years |