In the fourth episode of "Animal Armory," titled "Lethal Poison," the focus is on the deadly toxins produced by various animals in nature. The documentary explores how animals use poison as a defense mechanism, hunting tool, and means of survival in the wild. From venomous snakes to poisonous frogs, nature's arsenal of lethal poisons is vast and diverse.

The episode delves into the different types of toxins found in the animal kingdom, highlighting their unique properties and effects on prey and predators alike.

Viewers are taken on a journey through different ecosystems, showcasing how animals have evolved to harness the power of poison as a means of protection and gaining an advantage in the wild.

Through stunning visuals and expert commentary, "Lethal Poison" provides an in-depth look at the fascinating world of venomous and poisonous animals, shedding light on the intricate ways in which they have adapted to their environments. The episode serves as a reminder of the incredible diversity and complexity of nature's weaponry, and the importance of understanding and respecting these creatures in their natural habitats.