Justice League Unlimited Episode 06 This Little Piggy

While on a stakeout in Gotham City to stop some members of Intergang, Wonder Woman and Batman encounter the centuries-old enchantress Circe who transforms the former into a pig as revenge against Diana's mother Queen Hippolyta. Batman and Zatanna work together to return her to normal, while B'wana Beast attempts to find the "Wonder Pig" before she's butchered at a slaughterhouse.