Vine snake

[LSTOPFORTH]

I would like to know whether the Vine Snake is the only snake that has a red & black tongue? As far as I know, the Boomslang has a brownish-greyish-blackish tongue. But is it possible for the Boomslang to also have a red & black tongue?

[Daniellouw]

I do not think you will ever get a boomslang with an orange and black tongue.

[Bushviper]

Many horned adders also have a red and black tongue as do berg adders and quite a few exotics as well.

I have never seen a Boomslang with a red and black tongue.