Poliwrath looks superficially similar to Poliwhirl. However, it has gained more muscle, especially around its arms, which are now quite thick. In addition, it is much larger, standing a foot taller than its pre-evolution. Its eyes have changed from having wide pupils to small ones and it appears to sport a permanent scowl. Its belly also now resembles a gaping mouth rather than being completely circular, but retains the white coloration and spiral it had as a Poliwhirl.
In addition to the Water-type and hypnotic abilities it had as Poliwag and Poliwhirl, Poliwrath has now gained the powers of a Fighting-type. It can swim for vast distances without tiring, swimming far and fast with minimal breathing, and is adept at such swimming styles as the front crawl and butterfly. With its increased arm and leg strength, it also has the ability to run on the surface of water for a short amount of time. Like Machop, Poliwrath's muscles never grow fatigued, however much it exercises.
With its newly-gained fighting abilities, Poliwrath is more aggressive than its pre-evolutions, and is more willing to pick fights with others.
Poliwrath, despite being excellent swimmers, usually live on dry land near the water's edge. They can be found within the range that Poliwag and Poliwhirl can be found.
This Pokémon was unavailable prior to Generation I.