28/10/2025
Once again, Thanks to Yvonne for these very interesting titbits.
Snakes, many lizards and some frogs have a split tongue. I have seen it so often, but I actually didn't know the reason of their split tongue so I did some research
The split tongue helps them to "smell" their environment in stereo. The tongue is split and therefore has 2 ending, this is allows the animals to determine the direction of scent. They use this scent for hunting and navigation.
You often see these animals stick out their tongue, they just sit still and the tongue comes out and almost immediatelyd goes back in again. When they do this they collect odor particles (airborne chemical particles, including pheromones, moisture, and scents from prey). These particles are then transferred to a special organ in the roof of their mouth called the vomeronasal organ or Jacobson's organ.
The forked shape of the tongue helps them to figure out wether to go left or right. The Jacobson's organ will tell them from which direction the scent is stronger.
It would be similar to having two noses, one on each side of your head 🤣
This by the way doesn't mean that they don't have a real nose, because they do. It's just something extra.
There isn't much more to tell about the split tongue, but I thought it was a fun little fact to share and of course some split tongue photos