glass snake

US /ˈɡlæs sneɪk/
UK /ˈɡlæs sneɪk/
"glass snake" picture
1.

a legless lizard (genus Ophisaurus) with a very long, fragile tail that easily breaks off, found in North America, Europe, and Asia.

:
The glass snake can detach its tail when threatened, a defense mechanism similar to other lizards.
Despite its name, the glass snake is not a snake but a type of lizard.