Jackson’s Chameleon, Chamaeleo jacksonii, is an African chameleon belonging to the family Chamaeleonidae. There are two other subspecies recognized: Dwarf Jackson’s Chameleon and Yellow-crested Jackson’s Chameleon. They are native to the humid, cooler regions of Kenya and Tanzania, East Africa, found in great numbers at altitudes over 3,000 meters (9840 feet). There is also a feral population in Hawaii.
These are small to medium sized chameleons. Their adult size is about 12 inches in total length. They have a saw-tooth shaped dorsal ridge.
There is no crest. They are sometimes called Three-horned Chameleons because males possess three brown horns: one on the nose, and one above each orbital ridges around the eyes. The female generally have no horns, except for a slight trace of a nose horn. The coloring is usually bright green, with some individual animals having traces of blue and yellow, but like all chameleons it changes quickly depending on mood, health, and temperature.
Most chameleons are oviparous, but Jackson’s Chameleon gives birth to live offspring. Usually 8 to 30 live young are born after a five to six month gestation. They attain maturity after five months. The lifespan is variable, with males generally living longer than females. Their diet consists of small insects.