Jackson's chameleon (Trioceros jacksonii), also known commonly as Jackson's horned chameleon, the three-horned chameleon, and the Kikuyu three-horned chameleon, is a species of chameleon, a lizard in the family Chamaeleonidae. The species is native to East Africa, and introduced to Hawaii, Florida, and California. Jackson's chameleons typically reach a total length of 10 to 15 inches (25 to 38 cm), with males growing significantly larger than females and featuring three prominent, triceratops-like horns. Their prehensile tails account for about half of their total length. Check out the Jackson's Chameleon Care Guide for exact measurements and habitat requirements.Specific average sizes by sex and origin include:Adult Males: 10 to 15 inches (25 to 38 cm) in length.Adult Females: 7 to 10 inches (18 to 25 cm) in length.Dwarf Subspecies: Some specific island locales or dwarf varieties measure under 6 inches long.For detailed diet and husbandry guidelines, you can review PetSmart's Jackson & Veiled Care Article.
The Jackson's chameleon is a common reptile in the pet trade due to their unique appearance. This medium sized chameleon is native to the mountainous regions of Kenya and northern Tanzania. There is also a large feral population well established on the Hawaiian Islands after a small group was released in the 1970s. There are three subspecies of Jackson's chameleons: Trioceros jacksonii xantholophus, Trioceros jacksonii jacksonii, and Trioceros jacksonii merumontanus. The latter two species are very rare in captivity and Trioceros jacksonii xantholophus will be the subspecies of focus in this caresheet. The Jackson’s chameleon is a medium sized chameleon with an adult length of 10-13” (25-35cm). Though smaller and less colorful than other common species they are easily recognized by the male’s three prominent horns, which give them a prehistoric look. Males and females are predominantly green in color, though females can appear a rusty brown color and may have a darker green irregular pattern when stressed. As a montane species (native to higher altitudes) Jackson’s have more unique heat, humidity and supplementation requirements than more tropical species due to metabolic differences. Interestingly Jackson’s do not lay eggs but instead give birth to live young!
