It is pododermatitis (bumblefoot) - treatment consists of soaking the foot in either an antiseptic bath, or Epsom salts mixture to help lavage out any debris, or bacteria on the surface, but most importantly soften the tissue so the eschar (scab) can be easily excavated. After soaking for some time, gently try to peel off, and cut away at the eschar until full debridement has been achieved. If apparent, apply firm pressure to the open sore to squeeze out any caseous material, or puss.
The area can later be lavaged with an antiseptic at a high PSI, have an antibacterial ointment applied, then bandaged. Bumblefoot is a common problem in many heavyweight breeds, such as Pekins, and can originate due to direct puncture in the skin, or degradation of the epidermis due to hard/rough bedding which subsequently can result in bacterial invasion of the tissue. Striving for a clean, soft environment free of things that may puncture the tissue can help reduce the chance of problems occurring in the future.
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