Can you advise how to treat this infection? What is this called ?

Sri Krishna

See a vet immediately.

Dr. Tajunnisa M

Hi Mahalaxmi. Your pet needs a clinical examination for the proper diagnosis. It could be bacterial/fungal/trauma. Booking a home consultation with a veterinarian is recommended.

krish k

also you can keep applying coconut oil my dog faced the same issue.. i put oil and the wound has been healed now..