Wednesday, February 22, 2017

Frog spit is a non-Newtonian fluid - BIODIVERSITY

Its thickness depends on the forces it experiences.
The saliva is normally thick like honey  but when its tongue hits a bug, the force of the impact turn the saliva watery. The spit can now flow over the bug like a gooey net. After impact, the saliva turns sticky and thick again. The tongue pulls the bug back like a bungee cord.

Once the bug is in its mouth the frog uses its eyeballs to push the bug down. This eyeball-force turns the saliva watery again, releasing the bug into the throat of the frog.

Journal article:


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