You often see horses in movies, TV and perhaps have personally seen one face to face. But what do you really know about horses? Do you know the name of horses at its different stages in life? A horse less than one year old is called a foal. If it's one to two years old it is called a yearling. A male horse under four years old is called a colt while a female horse under four years old is called a filly. A horse reaches its maturity at four years old. A four year old male horse that has not been castrated is known as a stallion while a four year old female horse is called a mare. Do you know that the biggest horse that ever lived was more than seven feet tall? His name was Mammoth and he was born in 1848. More trivia and fascinating information with beautiful and colorful pictures of horses are featured in this book especially made for young learners.