Visualize conceptual difficulty: from chicken to chicken vs. panda to chicken

A user generates a visual illustration to clearly explain the concept that 'it's easy to become a chicken starting from a chicken, but extremely difficult starting from a panda or a viper,' using Nano

Visually express the concept that 'it's easy to become a chicken starting just before being a chicken,' and 'it's extremely difficult to become a chicken starting from a panda or a viper.'