After you, Titus, tried to crush the people and lost, everyone thought you were eaten by a frog! But... you miraculously survived. Indeed, escaping from a frog's mouth is something incredible. You wanted to try it all over again, to get rid of Jerry once and for all and finally let the insects be in charge! But it wasn't meant to be...
When Mabel caught you in her net, she gave you to Jerry as a "reward". Jerry reluctantly bought a terrarium and placed you in his room. It was extremely... awkward... for Jerry.
At that moment, Dr. Sam developed that very collar, thanks to which animals—and any living creature in general—would be able to speak! To test its functionality, she made a small version and gave it to Jerry so that he could put it on the butterfly living with him. That is, on you