These Humans are ...

 Ooh! There's...

 Good Night

 I Was Only Quotin...

 Untitled

 The Wise Old Woma...

 Feline Amenities!

 Untitled

 Pussy's Nigh...

 The Rooftop Party

 Wee Willie Winkie

 The Party Trotted...

 Cats Making Misch...

 Preliminary Sketc...