Growl, known as Runark (ルナーク) in Japan, is an arcade beat-em-up by Taito developed in 1990 and released in 1991. The game was ported to the Sega Mega Drive in 1991 and released only in the US and Japan (though the arcade version was also released in Europe).
You play as one of four early-20th-century rangers trying to stop a group of poachers from making many species of wild animals extinct. punches, jumps. If an enemy drops a weapon, picks it up and uses it, and lets it go. If you don't have a weapon in your hand, performs a spinning kick, + performs a spinning jump kick, and + and + performs a leaping kick in the appropriate direction.
Even though the arcade machine supported up to four players simultaneously, the Mega Drive version of Growl is a one-player only game. All sampled speech has been removed in the Sega conversion, and is substituted with captions at the bottom of the screen.