OH MY GOODNESS THIS IS SO COOL. WATCH. WATCH IIIIIIIIIT.
God is such an amazing Creator and Designer. To think He made this system in an instant! Ahhhhhhh, He's so awesome!
Too long, didn't watch:
The frog's tongue is incredibly soft and so deforms very easily to the prey. Its saliva is a non-Newtonian fluid; it's very viscous and sticky and elastic when not under pressure, and when under pressure, it flows easily. When the frog's tongue slams into it's prey, the saliva becomes fluid under the pressure and sinks into every crevice of the bug. When the frog pulls its tongue back, the pressure releases and the saliva becomes sluggish and sticky again, so the prey is pulled back into the frog's mouth. Once in the mouth, the frog sinks its eyes into its head, increasing the pressure on the saliva and allowing the frog to swallow the the bug.