Vigoroth is simply incapable of remaining still. Even when it tries to sleep, the blood in its veins grows agitated, compelling this Pokémon to run wild throughout the jungle before it can settle down.
This card is one of the 46 cards first released in September 2003 in the English EX Sandstorm expansion before the release of their Japanese prints. The Japanese print was later released on November 17 in the Gift Box.
The Focus Energy attack contains two grammatical errors. There is a "the" missing after the first comma, and there is an unnecessary "is" following the word "Slash".