entity.frog.tounge is unused. This is inconsistant with Bedrock Edition.
Steps to Reproduce:

1. Spawn a frog.
2. Spawn a small slime/magma cube.
3. Listen if entity.frog.tounge sound plays when the frog opens its mouth.

Observed Results:
The frog does not make a sound when it starts its eating animation.

Expected Results:
The frog would play the sound entity.frog.tounge.