Peppa Pig is a children's television programme broadcasting on Channel 5 and Nick Jr. in the UK, Nickelodeon/Nick Jr. in USA, ABC 4 Kids in Australia and Discovery Kids in Latin America, including Brazil. Each episode is approximately 5 minutes long. The show revolves around Peppa, an anthropomorphic female pig, and her family and friends. Each of her friends is a different species of mammal. Peppa's friends are the same age as she, and Peppa's younger brother George's friends are the same age as him. Episodes tend to feature everyday activities such as attending playgroup, going swimming, visiting their grandparents, cousins, going to the playground or riding bikes. The characters wear clothes, live in houses, and drive cars, but still display some characteristics of the animals on which they are based. Peppa and her family snort like pigs during conversations in which they are speaking in English, the other animals make their respective noises when they talk, with some exhibiting other characteristics, such as the Rabbit family's enjoyment of carrots. The Rabbits are also the sole exception to the rule of human-like habitation, in that they live in a burrow in a hill, although it does have windows and is furnished in the same way as the other houses. The characters also blush when embarrassed and their mouths are used to express other emotions such as sadness, happiness, irritation, bewilderment and confusion. Although the mammals are anthropomorphic, other animals are not, for example, the ducks, Tiddles the tortoise, and Polly Parrot. In addition, a narrator reinforces the action and humor, saying things like "Oh, dear" when something unfortunate happens (such as George starts crying) or "Look out!" when a character is doing something unsafe (such as Peppa riding her bicycle without looking where she's going). The first series of 52 five-minute episodes started on Channel 5 on 31 May 2004, and had its American premiere as part of Cartoon Network's Tickle-U preschool television programming block on 22 August 2005, and Noggin in December 2007 and January 2008. As of 2014, the series currently airs on the Nick Jr. channel in the US. In the United Kingdom, it can also be seen on Nick Jr., the same with Portugal, Italy, Benelux, Scandinavia and Australia. In Taiwan, the show can be seen on Playhouse Disney. The second series of 52 episodes began on Channel 5 on Monday 4 September 2006, with Cecily Bloom replacing Lily Snowden-Fine as Peppa, amongst other cast changes. The third series started broadcasting on the Channel 5 kids block, Milkshake! on 4 May 2009 with Harley Bird replacing Cecily Bloom and Lily Snowden-Fine as Peppa