1v1 is a game mode where two players choose a top tier animal - except the Bald Eagle and new animals and then fight to the death. There are no biome afflilations except for oxygen. After 90 seconds, toxic algae starts closing in. Some good animals are croc, whaleshark, orca, hippo, and humpback. However, the best animal by far is the AST. Counters for the AST include elephant seal and croc, as well as a skilled sleeper or anaconda
Please add to which animals have what advantages and what to do when you face a certain animal as another certain animal.