I noticed today that my male was doing his regular head bob and of course tried to mount my female. All of a sudden I saw the male loose a lot of blood from his vent area. It kinda happened really fast and I think either he or she caught it with a toenail. His vent looks fine from the outside, but I am worried that he may still be bleeding inside his vent. Is this something to panic about or does this sometimes occur during mating?