你 should learn how to care for your pet rock! I'm an expert pet rock trainer, and mine (his name's George) is now a fully grown, highly accomplished boulder!
Here's a book that might help 你 NOT to make your pet rock run away.
Oh, I 迷失 my pet Rock Lucas too. Now I only have my 龟, 海龟 named Lucas, my 龟, 海龟 eraser named Lucas, my green bird pen named Lucas, and my stuffed 龟, 海龟 named Lucas.