Temperament: Some breeds of horses are known for being more laid-back, while others are more spirited. It's important to match horses with similar temperaments so they don't clash.
Size: Horses of different sizes may have different needs in terms of space and feed. It's important to make sure that the horses in your group are compatible in terms of size so they can all get the resources they need.
Activity level: Some breeds of horses are more active than others. It's important to match horses with similar activity levels so they can get the exercise they need.
History: Some breeds of horses have been bred for specific purposes, such as racing or endurance riding. It's important to consider the history of the horses in your group and make sure they are compatible in terms of their intended use.
In addition to these factors, it's also important to introduce horses to each other slowly and carefully. This will help them get to know each other and build trust. It's also important to provide them with plenty of space so they can avoid each other if they need to.
With careful consideration, you can create a harmonious herd of horses that live together well.