Complex sentence: The large brown mantids are a quite agressive when adult and can be known to attack some more larger prey than other predatory animal that includes some small birds, rarely seen eating fish, frogs lizards and more.
Split into simpler sentences: The large brown mantids are a quite agressive when adult and can be known to attack more larger prey than other predatory animals. The animals seen eaten include some small birds, rarely seen eating fish, frogs lizards and more.