'Colts' in the Bible

thirty milk camels and their colts, forty cows, ten bulls, twenty female donkeys and ten foals.

He had thirty sons who rode on thirty donkey colts, and they had thirty cities, which are called Havvoth Jair to this day, which are in the land of Gilead.

He had forty sons and thirty sons' sons, who rode on seventy donkey colts: and he judged Israel eight years.