My kids have new pets...hermit crabs! They have wanted them for a long time. You pick the cage, sponge and different shells! At the store and after, my son was so careful with them and my daughter was quite "shakey" and rough. However, "G" has really taken great care of her crab. I did find out she gave it a bath in the bathroom sink but other than that she would do nothing less but the best for her "Hermie". I still could never pick one up but my kids love it and hold them so they don't get pinched!