dont think its a horn, they call it the casque. unfortuate accident, but it happens. thats why hot heat bulbs should never be laid right on top of the cage, and/or the basking perch shouldnt be so close. he is getting some real great colours on him, its awsome to watch veileds mature as they get more and more colour. im sure its awsome to watch panthers mature too, but ive never been able to see this. it seems like yesterday that my girlfriends veiled was just a little boy, months later hes striking.
on a side note, i love male veileds cause they have such a big head and tiny eyes haha. its cute