When does CatDog return?

CatDog follows the adventures of a cat and a dog who share a body, despite having opposite personalities. Cat is a strait-laced, intellectual cat whereas Dog is an impulsive, happy-go-lucky dog. The brothers can independently control their upper bodies with two heads, but they are conjoined at the midsection, meaning they have no tail or hind legs. The series ended on June 15, 2005, after a total of four seasons and 66 aired episodes over seven years, plus two produced episodes that never aired.
The series revolves around Cat and Dog, a golden-furred conjoined twin hybrid of a cat and a dog with two heads and shared body, with no tail or hind legs. Although they are best friends they have very different personalities, similar to "The Odd Couple" and the Looney Tunes shorts. The series takes place in Nearburg, a town dominated by anthropomorphic animals.