Knock, knock, knock! Who is hiding behind the barn door? This pretty lock  board illustrates the daily life of farm animals and their young. It consists of 5 doors with different opening systems: a key (with padlock), a bolt, a chain lock, a toggle latch and a (button) lock. Each door is represented by a different colour  and a different number. Surprise! This number is equal to the number of baby animals hidden behind the door. This attractive wooden toy allows your child to  develop their dexterity whilst learning colours, numbers and animals. Perfect for spending some fun and entertaining time on the farm!