Super Bottleneck Converter

Yuan Zhen traveled to another world and got a bottleneck converter by chance, which can transform any pet's bottleneck. Loach can turn into a dragon, and a sparrow can turn into a phoenix. It's no problem. He just wants junk pets. The more junk the better, preferably a fighter among the junk. Yes, only this kind of fighter is worth cultivating. What awesome holy beasts, mythical beasts, top-notch pets with unparalleled bloodline? Shit, just throw them away and don't even want them as gifts for me. They are even more awesome than me, so what use do you have? (This book is signed with a contract, please collect it, recommend it, click it, and your character is guaranteed to be completed)