I think the sharptooth got what was coming to it for all of this....
How many dinosaurs were killed, turned into orphans, childless parents, or whatever other damaged families in order to keep Chomper alive? Even though his LBT 5 quote "I had longneck for breakfast" was a pretence to his parents it still goes to show that he didn't life exclusively on insects all the time (or his parents would have asked about it). So what do you make of this? Fry Chomper for the greater good? :blink:
Uhh... when Chomper said he had longneck for breakfast, he was lying. He didn't really have longneck for breakfast. He said that because his parents sniffed out the gang, and he had to come up with a good excuse for the scent. His parents probably didn't comment on it because they consider it perfectly normal for a sharptooth to have meat (and, of course, it is). So, we may not know how many other dinosaurs Chomper had to eat. Mabey even none, given his young age. Who knows, he may not have even been able to physically do it at his young age, and he just had a diet like his current one in the television series. So, in short, frying Chomper would be a very stupid idea, because he wouldn't do anything to hurt the other residents in the Great Valley, and, as far as we know, never has done anything to hurt anyone else.
And, yes, the original LBT 1 sharptooth was just doing what came natural to it. It was doing what it had to do to survive. That's understandable, but it doesn't mean everybody else has to like it, or even put up with it. If there was a sharptooth roaming the very streets you live near, would you not want it killed (or at least stunned/tranquilized somehow) in a timely fashion?