The most common and most likely answer to this crossword clue is the 7 letter word GECKOES
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More clues leading to the result GECKOES
Buddy explains!

The straight part
We know that "lizards" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lizards = geckoes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GECKOES mean?
GECKOES noun- Any lizard of the family Gekkonidae. They are small, carnivorous, mostly nocturnal animals with large eyes and adhesive toes enabling them to climb on vertical and upside-down surfaces.