This war started out like most wars. Someone was pissed. Darth Cha-Cha was pissed at all the Cats, Kitties, and Felines, etc. So he decided that he would kill them all. Yep. Anyway, Cha-Cha organized a racist hate group called the Big Doggy Woggies. These were solders with the most high-tech weapons and the most bestest fighting skillz in the galaxy. They were unstoppable.
After many years of fighting pointless battles with pointless blood and gore, Darth Cha-Cha and the Big Doggy Woggies found the Cat, Kitty, Feline, etc. homeworld. They realized that the map they had been using was upside down, So they turned it around and discovered Yomamama. When the Battle of Yomamama started, Kitty Witty and Darth Cha-Cha, the two generals of the two armies that were fighting, met in Kitty Litter Square and started a Yo Mama contest. In the Kitty Witty won. Yeah, she won. Hooray. Yippee.