Danny Boyle, the British filmmaker who directed the movie Slumdog Millionaire, is directing the opening ceremony, according to The Guardian.
He is said to be including "a village cricket team, 12 horses, 10 chickens, 70 sheep, a model of Glastonbury Tor, two mosh pits, and the largest harmonically tuned bell in the world."
The Guardian also reports that a coalition of six animal rights groups has attempted to persuade Boyle and the organizers of the 2012 London Games to reconsider using live animals in the spectacle, citing a 2006 Animal Welfare Act that "forbids causing any undue fear and distress to animals."
Boyle responded to their concerns, according to The Guardian, telling them:
...genuine care will be taken of the animals...will feature only in the very beginning of the show during daylight hours and will leave the stadium shortly after the 9pm start and before any large effects or noisy sequences take place.
The report states that the animal rights groups aren't happy with his response, though, and it remains to be seen what happens next.