Pinkies have less nutrition in them - especially a lot less calcium.... it's like an adult survivng on baby cereal. You'll live, but not well, and not very healthy... and you'll probably shorten your lifespan.
various cornsnakes, 0.1 black pine snake, 1.0 uromastyx geyri, etc.
"The only thing worse than a human who had no respect for other animals was a human who assumed all other animals thought and felt just like he did." --Julia Ecklar, "ReGenesis"