After the Mustangs, noble Arab and Berber horses came to America. They bred with the Mustangs, and so nowadays you can still spot their elegant body shapes among many wild horses. It is often said that Mustangs are rather stubborn. This is because they live in freedom and are completely independent of humans. They also give birth to their foals without any assistance. The foals are normally born at night. This is less dangerous because their predators – especially pumas – tend to hunt at twilight, when it is lighter.