How so? I never seen/read anything about a lizard being "intelligent"...
My brother's 20 year old iguana is as dumb as they come...
Intelligence
Varanid lizards are very intelligent, and some species can even count.[6] Careful studies feeding V. albigularis at the San Diego Zoo varying numbers of snails showed that they can distinguish numbers up to six.[6][7] V. niloticus have been observed to cooperate when foraging.[8] One varanid lures the female crocodile away from her nest while the other opens the nest to feed on the eggs.[8] The decoy then returns to also feed on the eggs.[8][7] Komodo dragons, V. komodoensis, at the Smithsonian National Zoological Park in Washington, D.C., recognize their keepers and seem to have distinct personalities.[7]