Green anoles, scientifically known as Anolis carolinensis, are common North American lizards recognized for their distinctive ability to change color between shades of green and brown. These adaptable reptiles are frequently encountered in the southeastern United States, often capturing the interest of both casual observers and pet enthusiasts. Their modest size is a frequent point of curiosity, prompting questions about how large these lizards typically become.
Typical Adult Dimensions
Adult green anoles generally reach a total length of 5 to 8 inches (12 to 20 cm), with their long tail accounting for 60% to 67% of this length. Males are consistently larger than females; males usually attain 7 to 8 inches (18 to 20 cm), while females reach about 6 to 6.5 inches (15 to 17 cm). Snout-to-vent (SVL) measurements show adult males typically range from 2.1 to 2.7 inches, and females from 1.9 to 2.3 inches. The maximum recorded SVL is 3.2 inches (81.5 mm). The average adult green anole weighs between 2 and 6 grams.
Influences on Anole Size
Several factors contribute to a green anole’s ultimate size. Genetics play a role, with individuals predisposed to grow larger based on lineage and parental size. Environmental conditions also significantly impact growth, particularly diet quality and consistency. Inadequate nutrition can hinder development. The physical environment, including enclosure dimensions, temperature, and humidity, affects growth; inadequate space or improper levels can lead to stress and stunted development. Exposure to appropriate ultraviolet B (UVB) light is necessary for calcium absorption, supporting healthy bone development.
Supporting Optimal Growth
For captive green anoles, mimicking their natural habitat supports healthy growth.
- Provide a varied diet of gut-loaded insects (e.g., crickets, mealworms, dubia roaches). Feed juveniles daily and adults every other day, using insects no larger than half the anole’s head.
- Dust insects with a calcium and vitamin D3 supplement at every feeding, and a multivitamin powder weekly.
- Use a vertically oriented enclosure, with a minimum of a 10-gallon tank for one anole; 20 gallons or larger offers more climbing space.
- Maintain daytime temperatures between 75-85°F (24-29°C), a basking spot of 85-90°F (29-32°C), and nighttime temperatures no lower than 65°F (18°C).
- Keep humidity at 60-70% through daily misting, as anoles drink water droplets from surfaces.