Dragons are needed to harvest Trees, collect items in other Islands, and getting rid of things in the way on other islands. Each Dragon is unique and has different amounts of Stamina. The bigger the Dragon, the more Stamina they have and can help you out on the island more! You can tap on each Dragon when you see them flying around your island to check their status.

Every task they do reduces their Stamina and the amount of Stamina reduced depends on what they do. When they used up all their Stamina, they will rest in the Dragon Home. It will take some time for them to get ready, but if you don't want to wait, you can tap on the Dragon Home and use Gems to immediately recharge their Stamina.