What a Lot of Otters!

When little Lottie Potter goes to Trotter's Otter shop to buy a new pet, she certainly doesn't expect to find quite so many kinds. There are spotty otters, potty otters, snotty otters and tangled-in-a-knotty otters - to name but a few! But what will she do when the otter she chooses turns out to be a rotter?