Cassio Pet Resort – Training Center 173 Mount Pleasant Rd, Newtown, CT06470 Isolated by dense trees, the main lodge of Cassio Pet Resort looks like a welcoming retreat. The accommodations make it…More clear that your pet's safety, as well comfort, is top priority. Cassio contains 48 rooms for dogs that include a personal exercise area, cloth beds and fresh towels. There is also a separate room for up to 18 cats. The owner and founder, Joy S. Brewster, has a long and respected career in everything related to dogs from breeding to training, and brings that experience to the kennel, offering a series of obedience classes.