Use light, not force
In a well lit place, look between the toes, around each nail and across the pads. Search for a visible thorn, cut, blister, discharge, damaged nail or hair wrapped tightly around a toe. Compare temperature and color with the opposite paw. Do not squeeze, probe a puncture or dig for something below the skin.
Think about the surface and the previous hour
Hot pavement, ice treatment, broken glass, seeds, insects and rough ground leave different clues. Note the walking route and any sudden yelp or licking. Swelling that developed gradually with repeated licking may involve skin inflammation or infection rather than one outdoor injury.
- Exact area and speed of swelling
- Whether the dog can bear weight
- Wound, broken nail, puncture, discharge or odor
- Recent heat, cold, chemicals, stings or rough terrain
- Licking and whether it began before the swelling
- Facial swelling, hives, vomiting or breathing change
First aid has a narrow role
For active bleeding, apply gentle direct pressure with clean material while arranging care. Rinse obvious surface contamination with clean lukewarm water unless a chemical label or veterinary professional gives different instructions. Do not use peroxide, alcohol, essential oils or human antibiotic creams. Avoid tight home bandages; swelling can make them dangerous.
Choose urgency by function and speed
Emergency care is needed for breathing difficulty, facial swelling, collapse, severe burns, uncontrolled bleeding or a crushed or deformed foot. Seek prompt care when the dog will not bear weight, swelling is rapidly increasing, a nail is torn, a puncture or foreign body is suspected, or pain, heat, pus or fever is present.
If swelling is absent and the main sign is an uneven gait, use the limping guide. When the central problem is nighttime paw licking without obvious swelling, the existing paw licking guide owns that intent. This page remains focused on visible enlargement of the paw.
Monitor the boundary of visible swelling with photographs rather than drawing on the skin or squeezing it. If a toe appears enlarged, compare nail angle and the webbing on both sides. A grass seed or splinter may leave only a tiny entry point and later migrate, so mention field exposure even when nothing is visible. If a boot or sock is used briefly to keep the paw clean during transport, remove it indoors and make sure it is not trapping moisture or constricting circulation. Licking often enlarges a small problem quickly; ask the clinic about a safe barrier instead of applying bitter products to broken skin.