Books in the Free Collars Kingdom series in order

Young catboy Cyan has found himself on one side of a huge territorial catfight against the beautiful Siam and her endless crew of gorgeous generals.

Cyan, a young Abyssinian cat, is combating enemies so that he can live in the basement of his old apartment building, the one place his beloved master might think to look for him. The gorgeous, evil, and slightly wacky Siam, leader of her own army, is determined to seize Cyan's apartment building for herself.