Tauros domestication is widely held, based on the multiplicity of native breeds, to have begun in Paldea, and Paldean breeds do indeed provide the overwhelming majority of the world's beef. Yet the difference between these black Tauros and their browner, still-wild counterparts lies not in their power, but their attitudes towards humanity. Indeed, a great deal of Paldean athletics is predicated on the fact that Paldean Tauros, much like their wild counterparts, are dangerous enemies when provoked.
Historically, the Aqua Breed was too valuable a work pokemon for use in Taurosfighting, and was extensively relied on both for rice agriculture and for transporting goods to market, often across shallow streams and rivers. This should not, however, be taken to imply it was somehow docile, as generations of neophyte farmers have discovered to their chagrin.
The Blaze Breed is commonly believed to have its origins in an attempt to create self-cooking beef, akin to Torchic or Tepig for poultry and pork, respectively. If so, it was a failure; the pokemon simply does not produce enough heat to cook its own thick hide. Yet a Tauros mane which lights itself ablaze is truly a mighty spectacle, and revisionist historians, citing old records of their use in sacrifices and the arena, hold that this was the breed's original purpose.
Paldean religion has not included live sacrifice since the Ruin, but Taurosfighting only grew in popularity across the medieval period – and the large, ferocious Tauros bred for combat against matadors need not only tangle with Aegislash, Gallade, and humans with similar weapons. They are more than equal to their wild counterparts in head-to-head combat, and their recent successes in the Paldean League, after a decades-long absence, has returned these pokemon to the Paldean Colosseum – albeit in a different sport!