Everything suddenly seems horribly different, your tongue is longer, mouth huge and teeth feel razor sharp. Stranger still, you are then looking up at the witch; as she sneers her evil grin down at you.
"Feeling a bit stiffed, somewhat miffed, well you might, being now a Mastiff dog, my new guard dog; come and I shall chain you to your post!" The Witch addresses her new dog, you are that big brown beast. Anger at her and the entire world makes you bark and growl, seething with hatred for all that lives, and is happy.
Groaning to yourself, you then take an inventory of what being as a dog and Mastiff breed leaves you to tend and live like would some ugly, big guard dog.
A wagging tail is but the beginning to what is all new, paws and claws, floppy ears, a wet nose from a long slurping tongue seems all so righteous for being a dog.