How do you breed horses on imagine champion rider for the Wii platform?

Unfortunately, you can't breed horses in Imagine: Champion Rider for the Wii. The game focuses on riding and competing, and the horses you acquire are pre-defined and cannot be bred.

However, you can unlock new horse breeds and colors by progressing through the game, completing quests, and earning trophies. This will give you access to a wider variety of horses with different stats and appearances.

While breeding horses is not a feature in the game, you can enjoy customizing your horses with different saddles, bridles, and other accessories to make them unique.