What should I do if my dog’s wound is leaking yellow or green discharge?

Read time: 3 minutes

Overview

If your dog’s wound is leaking yellow or green discharge, it’s worth taking seriously. It can happen when a wound is irritated, contaminated, or becoming infected, but there can be several possible causes, so you can’t tell for certain just by looking at it.

What matters most is how the wound looks, whether your dog seems painful or unwell, and whether the discharge is increasing or has a bad smell. A small amount of pale, watery fluid can be different from thick yellow or green discharge, which is more concerning.

Things To Check

1. Check whether the discharge is thin and watery, or thick, cloudy, creamy, or sticky.

2. Look for redness, swelling, heat, broken skin, scabs, or the wound opening more.

3. Notice whether your dog is licking, chewing, rubbing, or guarding the area.

4. Smell the wound if you can do so safely, as a strong or unpleasant smell can be a useful clue.

5. Check if your dog seems sore, less active, off their food, or generally not themselves.

6. Think about whether the wound could have been caused or worsened by a bite, scratch, foreign body, muddy turnout, or licking.

7. Check whether the discharge is getting worse, spreading onto the coat, or soaking through bandages or dressings.

Common Causes

The most common reason is a wound that has become contaminated and is now inflamed or infected. Bacteria can build up in damaged skin, especially if the area stays damp, dirty, or is being licked.

Sometimes the wound has started to drain pus, which can happen with an abscess, puncture wound, bite wound, or a wound with trapped debris. Foreign material, such as a thorn or grass seed, can also keep a wound irritated and draining.

Less commonly, yellowish fluid may be part of normal wound healing, but green or thick discharge is more likely to suggest the wound needs a vet check, especially if it is worsening.

What To Do

Keep the area clean and stop your dog from licking or chewing it. If you have a suitable collar or recovery aid, use it so the wound has a chance to stay undisturbed.

Gently prevent further contamination by keeping your dog out of muddy, dirty, or wet conditions where possible. If the wound is on a leg or paw, short calm walks for toileting are usually better than lots of running about.

If the discharge is on the surface, you can gently wipe away loose dirt with clean gauze or cotton wool dampened with cooled boiled water or saline. Do not scrub, squeeze, or try to open the wound.

Monitor the wound closely over the next few hours. If it is becoming more swollen, more painful, smellier, or the discharge is increasing, it needs professional assessment.

Products That May Help

For dogs with dirty skin, coat or small wound-adjacent mess, a gentle pet care routine can help you keep the area clean and easier to monitor.

Pet Care

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