Colour-blind children find it hard to tell the difference between colours. For example, your child might not be able to see a red ball ... “Let’s find lots of blue things today.

Maintaining the attention span of a toddler should be an Olympic sport. These little tykes are old enough to make their boredom known, but they’re not great at articulating what they actually want.

Children can even see flesh-eating piranhas ... but still enjoyable. One of the best things to do in Hershey, Pennsylvania, Hershey's Chocolate World is also a beloved attraction in Las Vegas.