Why is my dog’s bite wound leaking pus or fluid? | arlo.® Atlas
Share This Guide
Read time: 3 minutes
Overview
If your dog’s bite wound is leaking pus or fluid, it usually means the area is irritated, draining, or possibly becoming infected. Sometimes it’s a normal-looking clear or pinkish discharge from a wound that’s trying to heal, but thick yellow, green or smelly pus is more concerning.
There can be several reasons for this, so it’s worth checking the wound carefully rather than assuming it’s minor.
Things To Check
1. Check what the fluid looks like. Clear or slightly blood-tinged fluid can happen with healing, while thick yellow, green or creamy discharge is more suggestive of infection.
2. Look for swelling, heat or increasing redness around the bite. These changes can mean the area is getting more inflamed.
3. Notice whether the wound smells unpleasant. A bad smell can go along with trapped infection or dead tissue.
4. See if your dog is licking, chewing or scratching at the wound. Ongoing irritation can stop it settling down.
5. Check whether the wound is open, deep or has a small puncture hole. Bite wounds can look small on the surface but be deeper underneath.
6. Watch your dog’s general behaviour. If they seem quiet, sore, off their food or not quite themselves, that matters.
7. Think about how long it’s been leaking. A wound that is worsening, or still draining after a short period, needs more attention than one that is steadily improving.
Common Causes
The most common reason is a bite wound that’s become infected. Dog bites often push bacteria under the skin, even if the entry point looks small.
Sometimes the wound is draining because fluid and debris are trying to escape from a deeper pocket or abscess. In other cases, the skin may simply be inflamed and producing wound fluid as part of healing.
Less commonly, a wound can keep leaking because it’s being reopened by licking, movement or a hidden foreign body. If the discharge is heavy, smelly or getting worse, that’s more likely to need veterinary attention.
What To Do
Keep the area clean and dry, and stop your dog licking or chewing it if you can. Don’t squeeze the wound, pick at it or try to flush deep punctures yourself.
If the fur around the wound is trapping fluid, you can gently keep the surrounding area clean so you can see what’s happening. Make a note of the colour, smell and amount of discharge, because that can help you judge whether it’s improving.
Monitor your dog’s comfort, energy and appetite over the next few hours. If the wound is not clearly settling, or the discharge is thick, smelly or increasing, it’s sensible to get it checked.
When To Contact A Vet
When To Contact A Vet
Contact your vet promptly if the wound is swollen, painful, very red, smelly, deep, or leaking yellow or green pus. You should also seek advice if your dog seems unwell, the wound is getting worse, or it was caused by another dog and may have punctured deeper than it looks.
Dog bite wounds can look minor on the outside while problems develop underneath, so it’s better not to wait if you’re unsure.
Products That May Help
If you’re managing a bite wound at home while you’re keeping an eye on it, the arlo.® Pet Care collection may be useful for general grooming and hygiene support around the affected area.
Related Questions
Why does my dog’s bite wound keep reopening?
How can I tell if a dog bite wound is infected?
Should I clean my dog’s bite wound at home?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.