Professor Pille's Hierarchy of Needs

Old stupid outdated Needs
Modern Needs for Modern Tymes

Bunnies may be substituted for kittens and breasts may simply be ignored for females of the species (most at least, unless they read gossip magazines) and replaced with either hot baths or nothing much else. For many nowadays kittens (along with, possibly, breasts) may simply be replaced by cell phones and for some the entire pyramid may consist of drugs, money, or video games... and pizza.