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A. We can't advise you to give antibiotics without having seen your dog. The best thing you can do is clean it thoroughly with salty water. Put one teaspoon of salt in a pint of boiled water and leave it to cool down. Do this several times a day. You need to flush all the pus out well and continue to clean for several days. If it gets worse then you do need to see your vet. If you can't afford veterinary treatment then you should definitely consider insurance, although it won't help in this instance you own a large pet and the chances are you will need it in the future.
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