Praying mantises are increasingly kept as companion invertebrates with specific humidity, temperature, and feeding requirements that determine welfare outcomes.
Praying mantis welfare is uncertain given their simple nervous systems, but behavioral responses to environmental conditions suggest they can experience negative states from incorrect temperature, humidity, or feeding failure. Molting failure from incorrect humidity causes welfare harm. Their short lifespan makes each life stage significant. Welfare-conscious invertebrate keeping provides appropriate environments and live prey even when sentience is uncertain.