A good rule of thumb it to use the following formula: 10 gallon units X 1 + 1= # of Anoles. Thus you can house two in a 10 gallon enclosure, three in a 20 gallon, etc. up to four Anoles. Above that number allow 10 gallons per Anole. Remember, these are minimums and larger enclosures are better by far. Since Anoles are arboreal, make sure that you use the “high” form of terrarium enclosures.