Complex sentence: In 1997, Warner Bros. Animation announced a new show it was originally under the name "Lil' Looney Critters", but in April 1999 they changed the name to "Baby Looney Tunes".
Split into simpler sentences: In 1997, Warner Bros. Animation announced a new show. It was originally under the name "Lil' Looney Critters", but in April 1999 they changed the name to "Baby Looney Tunes".