Some pinatas can only become resident if you evolve pinatas.
If you direct a Taffly to a Firebrand, it turns into a Redhott if you quickly extinguish it with water.
If you feed a Gooseberry to a Quackberry, it turns into a Juicygoose.
If you feed a Daisy and a Blackberry to a Horstachio, it turns into a Zumbug.
If you feed a Buttercup to a Sparrowmint, it turns into a Candary.
If you give a Nightshade Berry to a Lickatoad, and then tap before it becomes ill, it becomes a Lackatoad.
If you give a Newtgat a Chile, it becomes Salamango.