Kachorra's nickname is puppy dog in Spanish. Natalia Oreiro thought it was cute, and liked that it was with at "K" not a "C" because she isn't a dog.
Inspired from the American show The Nanny.
For some outfits Kachorra has a flower stuck on her lip, this was actually done to cover Natalia Oreiro's herpes break out.
Many motifs in the show referred to Natalia Oreiro's music. Many dolls of deviled angels were featured, which was her music persona.
Only Pirrina sees Kachorra speaking to her conscience. Bernarda sees the sock puppet but doesn't understand what it is. While Bruno is told by Kachorra, but never shown the sock puppet.