The five baby Humboldt penguins at Chester Zoo are off to school.
They're learning how to swim, hunt and feed in water.
The Doctor, Dalek, Tardis and Gallifrey are all five months old. Sonic is three months old.
Lead keeper Anne Morris said: “The chicks, which are the penguin equivalent of toddlers, have settled into our penguin crèche really well indeed."
Keeper Karen Neech added, “Dalek, Tardis and Gallifrey are showing a great appetite for learning but The Doctor is of course top of the class."
Watch the penguins in their training below:
