Implement a pet system where players can name, adopt, and customize pets with patterns and colors. Pets can be kept in players' homes and follow their characters. Adopting pets will cost game money and mythical currency, purchasable with blockbux. Introduce a new 'pets' category in build mode with items like pet beds, food and drink bowls, and litter trays. Allow players to teach pets different tricks. Include a pet store in the town or on the map where players can buy pets and potentially work a pet carer or vet job. Pets will have their own mood category for basic needs, reminding players about checkups or injuries, and adding pet bills for treatments. Ensure pets do not die in the game to avoid upsetting players.