There are 12 of these massive animal heads on show at Somerset House in London.
Each bronze head weighs 360kg - that's like 10 average sized 11 year olds!
They're blown up versions of the traditional zodiac sculptures which were on a clock at a palace outside Beijing back in the 18th Century.
They're part of an exhibition called Circle of Animals by a Chinese artist called Ai WeiWei.
Ai WeiWei was arrested by the Chinese government over a month ago, and they haven't said where he is being held.
Lots of British art galleries have been displaying his work because they don't want the world to forget about him. One writer said: "All you can do is keep his art alive."