Sexual Dimorphism and Age‑Linked Cornual Progression and Regression in Furcifer balteatus

Furcifer balteatus is a striking chameleon species endemic to Madagascar's eastern rainforests, particularly around the highland regions near Ranomafana. It is recognized for its vivid banded coloration and the presence of rostral appendages in males, which make it one of the more distinctive members of the genus.

In terms of sexual dimorphism, females are born completely hornless and remain so throughout life. At most, some females may show a faint indication of rostral development, but this never progresses into a functional horn. 

Males, by contrast, are born already with a small indication of horns. These structures initially project straight forward, remaining pointed during early growth. As males mature, the horns become broader and more laterally compressed, giving them a more robust appearance. In older specimens, however, a reduction in horn size and definition can sometimes be observed, suggesting age‑related regression of the appendages.