Do Flea Bites Ooze or Have Pus?

If flea bites become infected with bacteria they can have a puss or watery discharge from them, and the bites may blister as well.

A flea bite that is healing naturally will be itchy and cause discomfort, but it should not have puss or discharge any liquids.

If they do, they should be inspected by a veterinarian or a doctor to see if antibiotics need to be prescribed due to a possible infection.