the frongs tongue is located in the fron of the mouth
At the front of the mouth.
So it doesn't fall out.
the frog's tongue is attached at the front unlike us humans. hence it can flick its tongue to catch insects. The tongues root is the "radix" It has a lot of the same characteristics as most mammals...
It's attached to the front of the mouth, so that it can whip out and grab prey at a bigger distance.