Neosporin actually isn't the best route to go, since it's oil-based. It tends to make scales fall off where applied. also, double check and make sure the ointment has NO pain relief ingredients, because that is toxic to animals.

A good alternative is Silver oxiadizine cream (or whatever they call it, it's found in the same aisle as neosporin and is commonly used to treat burns). it's water based, so no sloughing of scales, and also no pain relief (but always double check!) also, Betadine. it's a relative of iodine, a disinfectant commonly used in hospitals, but it's made for home use.

Otherwise, definitely time for a vet visit. They'll be able to prevent infection and make sure there's no lingering damage from the bite.

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