The US doesn't have many examples of an evolutionary arms race between species but there is a notable one happening in Oregon between salamanders and snakes.[0]

The US doesn't have many examples of an evolutionary arms race between species but there is a notable one happening in Oregon between salamanders and snakes.[0] [0]https://www.atlasobscura.com/articles/how-a-deadly-camping-trip-revealed-an-arms-race-between-snakes-and-newts https://www.atlasobscura.com/articles/how-a-deadly-camping-t...