Oh..Sorry I forgot about the Slater's. They are an insect that eats wood. They are about 1.5cm at most. They have a hard shell and lots of legs, they curl up in a ball when threatened. They are easy to breed cos they eat wood. You can even have a corner in your frog enclosure of wood and Slater's and they will breed by themselves and the Frogs have a constant supply of food. The Slater's tend to come out at night. My Whistlers love them.