Catterly Purraduce

Catterly is a fluffier than ordinary tressym who resembles a standard ragdoll cat with his sturdier than average housecat build. His primary feature is his wings. Extending from his well-muscled shoulders, these wings are formed like a bat's, being divided into arc-segments by hollow elongated "finger" bones. However, the leathery membranes between these bones are covered in feathers. His wings have a maximum wingspan of 3 feet.
Like ordinary cats, tressym stalk and pounce on their prey, using their claws and fangs to slay it. However, the ability to fly gives them a new dimension to hunt in and makes them much more dangerous to birds and insects. They can also get into aerial catfights.
Otherwise, they avoid fighting with anything larger than themselves, by flying away and hiding. If pursued by larger flying creatures, they will go to ground and seek a small hole or crevice to conceal themselves in.
Nevertheless, they are cunning and quick learners, knowing enough to scratch a foe's eyes and have learned the danger of weapons and wands held by people.

Catterly is the familiar of Althea Liadon and has been at her side for over 300 years at this point and even followed her to Eo from the forgotten realms when her quest for redemption brought her across the multiverse. He is named after Cadderly Bonaduce who was a famous champion if Deneir the god who brought Althea to the library and started her on the path she follows today.