RideablePolarBears - Ride Polar Bears in Minecraft

With this mod, you can tame and breed polar bears using fish as treats. However, be careful - don't approach adult bears when their cubs are nearby, otherwise they may become aggressive.

After successful taming, you can equip the bear with a saddle and ride it across the Minecraft world. The controls are very simple - use the spacebar for jumping, just like when riding horses.