The Sims 4 Cats and Dogs includes the ability to run a vet clinic.
Many illnesses can be cured at the exam table if your Veterinarian Skill is high enough. To compensate for this, it's rather expensive. The Sims 4 Pet Sicknesses in Cats and Dogs Veterinarian Diagnosis, Treatments, and Illnesses List The Surgery Station seems to deliver faster diagnoses due to its in-depth scans.
