This awesome guy is a Casacorn (a cat/dragon hybrid) created by  Nastacula She even has a backstory for them:
"A very rare creature to catch sight of, Casacorns are extremely shy and will fly away at the hunt of danger or loud noises. They are attracted to strong, sweet scents such as flowers, candy, pastries, jam, honey, etc. You can usually find them in the early spring frolicing in open fields with tall grass. When they fly, they literally 'swim' in the air, using their long tails like a rudder, twirling and flipping around.

Usually they are extremely small - the size of a mouse - but some say they have seen them as big as cats...but since the Casacorn's face resembles a cat anyway it's hard to tell if these sightings are true or false.

Their diet is strictly vegetarian, mostly consisting of nectar and green vegetation. They will gradually change color according to their diet and the natural dyes found in flowers. "

However, with Neesh (and Arbor) they are an even rarer breed of Casacorn. Neesh can change his form from cute and innocent to a much larger than normal (size of a large dog) form and is actually an omnivore. This type of Casacorn is typically killed by the rest of their kind to maintain peace in the group. It seems that these two managed to elude their kind's culling.

Neesh is far more devious and even dark at times, preferring to kill small creatures and eat them rather than survive of plants alone. His feline nature runs deep and he likes to play with his victims before killing them, which is where his true evil lies. He could be playing with a small child in his normal form only to transform and consume them.