![](https://image.tmdb.org/t/p/original/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![](https://image.tmdb.org/t/p/w342/5O6yMOGWqfJX0TWHahai4nR8z3i.jpg)
Plant wars
Since animals emerged on land more than 300 million years ago, they've turned to plants as a source of food. But animals only manage to eat around a fifth of the vegetation that’s available to them. So why don't they eat more?
![](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![](https://image.tmdb.org/t/p/w300/eIHXl4rbMtuyTSDl6WBPyZVzPvD.jpg)
![](https://image.tmdb.org/t/p/w300/uRM8vPQUhqsAGc834IgmffWxUuL.jpg)
![](https://image.tmdb.org/t/p/w300/rE2CWaVegs71lW8OSeOti3rh61P.jpg)
Other episodes for this season
![Plant wars](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![The animals strike back](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![Talking trees](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![Dangerous to delicious](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)
![Weapons of the future](https://image.tmdb.org/t/p/w300/s4vlHqP5efHYh3nOFfOfTKclY1L.jpg)