Cat (Franchise)

Function
Pet and Mouser

Norse Mythology
Freya's chariot

Book of Dragons
Tabby cat

Legend of the Boneknapper Dragon
Gobbers says "I carved through that thick brush as fast as a jungle cat. Still, the Boneknapper was right behind!"

School of Dragons
Stable Quest "Lynxes, Penguins, Oh My!"

Other Mentions
Dragons based on cats - Toothless/Night Fury in part based on a Panther; Moldruffle described as "cat-like"; Dean DeBloise describes Zippleback as a Siamese cat with a snake; Bewilderbeast concept part lion plus others