To play Toca Pet Doctor, users can choose their favorite pet and start by examining them for any illnesses or injuries. They can then diagnose the pet's ailment and provide the appropriate treatment, such as applying a bandage or giving medicine. Users can also perform surgeries or take x-rays to identify any issues. The game offers a range of pets with different ailments, giving users a chance to learn about the various treatments that pets may need. The game's controls are simple and intuitive, allowing users to interact with the pets and perform the necessary tasks with ease. Overall, Toca Pet Doctor is a fun and educational app that teaches children about the importance of animal care and promotes empathy towards animals.