Many people have asked us if the cockroach legs we cut off and use for our experiments grow back on the respective owners. That and “the cockroach leg is still alive when removed from the body?” are the two most common questions we get, from 5 year olds up to 80 year olds.
After a cockroach donates 1-2 of its legs to science, he/she retired to the shady acres retirement home, where it spends the rest of its cockroach life living in dirt, making babies, and eating organic lettuce and carrots. When cleaning the terrarium, we often check to see if any of the legs have grown back.
Look what we discovered! The cockroach below went through two molts after his right rear leg was cut off. He just recently molted and we saw a little leg!The other leg (left rear) was cut in between the first and second molt.So, Yes, Virginia, they do grow back. Just takes two molts for the growing leg to appear. This cockroach is fine; he is back in his house eating lettuce.