Silkworms (or Bombyx mori ) are moth larvae raised primarily for their silk, but are also used as reptile food. They are high in protein and relatively low in fat, making them a healthy option for many insectivorous reptiles, such as geckos and lizards. Their medium size and tender texture make them easy to digest, but as with all insects, they should be fed in moderation, often as a supplement to a varied diet to ensure a balanced diet.