Help with gifypet

So i found this which lets you create a small pet kind of thing

* GIFYPET *

And you can customize the pet the name, and background.

But i have seen some ppl customize the sound, the things the pet says, the food, and even more stuff.

I searched everywhere and still dont know how to do that?

If you know plz help me and thank you! :D :3

Idk if this is useful but i also found this :P

GitHub - orphankicker/gifypet · GitHub

Thank you so much it would mean a lot to me bc i think this pet is so cool i just wanna customize it a bit more like others!!!! :D :3