Tsar Mold

The Tsar Mold also commonly known as The Purple Menace is one of the most dangerous species in the world.

Full Grown
The Tsar Mold is a parasitic being that survives by holding onto an host and controlling it to fit it's needs. In this case it evolved to make fit of plant life and even animals so that they explode and allow it to spread it's spores.

The Tsra Mold can live in aquatic environment and is known to parasite whales and dials. Whales because they tend to explode when they die in shore and dials because they evolved specifically to hack into dials and make them release all their contents in an explosive fury.

Spores
The spores of the Tsar Mold are nearly indestructible and all attempts to destroy them have wielded unsuccessful. This evolutionary gift is what allowed the Tsr Mold to evolve into what it is today, a fungi that spreads by literally exploding it's hosts.

Out Of Ordinary Hosts
While rare the Tsar Mold can make any other animal explode after it dies by decomposing it's insides into massive amounts of gas and having them explode. It however never seems to target plants because of how rare it is for them to explode. It's theorized that they could conquer any island if it was coupled with the explosive trees of ???.

Trivia

 * The name is a reference to the Tsar Bomba, the greatest nuclear war head ever detonated in the world.