These Humans are ...

 TommyTortiseshell...

 I Was Only Quotin...

 Midnight Concert

 The Wise Old Woma...

 A Coon Song

 Untitled

 Oft in the Stilly...

 Feline Amenities!

 Star Struck

 There's Many...

 Santa Claus in Pu...

 Stripes to the Fr...

 Untitled

 Meeting by Moonlight

 Cat In Repose

 The Party Trotted...

 Cats Making Misch...

 If Only Big Thing...

 The Latest Applic...

 Preliminary Sketc...