A common feature is their very long tongues which in most species is the same length as the chameleon itself, this tone is tipped with a muscular and stick tip which is uses to catch its prey of mostly insects.
The Yemen or Veiled Chameleon (Chamaeleo calyptratus) is a good chameleon to start with and is native to Saudi Arabia and the Yemen, hence its common name. Generally speaking it is quite large as far as chameleons go getting to around 2 feet in length including the tail.

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