Animal Contra is an anthropomorphized bull terrier who is a member of the "Four Hell Warriors of Neo Contra". Able to listen to, comprehend and converse with words, he appears in Neo Contra as a boss in the fourth level. He lures the players onto his ship and then sets it to self-detonate. Bill Rizer and Yagyu Jaguar Genbei escape by riding missiles and surfing to battle this creature. He fights them in a mecha that fires reflecting lasers and shooting blasts. After his vehicle is destroyed, he is sent flying off into the sky.
Animal Contra is the only member of Neo Contra whose fate remains unknown (presumed to have died on impact but never confirmed).