https://www.gamespot.com/articles/red-dead-redemption-2-lets-you-drift-on-your-horse/1100-6461908/

Rockstar is upping the horse game in Red Dead Redemption 2. There are a number of new skills you can perform on horses in the sequel, one of which is drifting like a car in a Fast & Furious movie. Really.

If you get enough speed, you can perform a drift--of sorts--in which your steed will quickly change directions. You can even horse-drift in a complete circle, which is almost certainly impossible in real life. Nonetheless, these should prove to be useful when navigating the world on horseback, rather than the car you might be accustomed to using in GTA V.