I did think it would be amusing if Chomper tried to teach Litltefoot the Sharptooth language. Then Littlefoot would attempt it when a female Sharptotoh was near. He would try and befriend her and ask her not to eat him. However, he'd say the wrong thing and tell her that she had a big tush. Then she'd get even madder and chase him.
It would be amsuing if one of the Gang tried to speak Sharptooth and goofed it up, further angering the Sharptooth.
They should try something like that in LBT.
(BTW, I wonder if Spike can speak Sharptooth. His roar attempt in the fifth movie was pretty good.)