Daniel Radcliffe made his film debut at the age of 10 in a BBC version of David Copperfield. At 11 he was cast as Harry Potter, and he spent the next decade starring as the boy wizard in eight film adaptions of J.K. Rowling's novels. His latest movie is a horror thriller called Horns.

... Ever wonder how he filled his time between those projects? We have one theory: We've invited Radcliffe to play a game called "Sure, you're Harry Potter, but what do you know about hairy pottery?" Three questions about Chia Pets — those strange little planters that grow chia leaves, looking amusingly like hair.

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