For the first task you will have to focus on increasing your character's intelligence by reading books and going to the library in high school. When you finish high school you will have to enter the university and seek the specialization in biology. When possible, getting into college and veterinary school will help you a lot.
When you finish school you will have to look for a job as a veterinarian, so we recommend you go to the time tab in the agenda, but if it does not work, you will have to restart the application on your phone.
The next step is to purchase land such as a farm, ranch or large acreage. In case of any problem, try restarting your device again and make sure your game is fully updated.
The next step is to purchase multiple pets to live on the property. It doesn't matter what kind of pets, as long as there are 10. Make sure you take them to the vets so they can get checked out.
This is all you need to know about how to complete the Dr. Dolittl challenge in BitLife, so now that we are done, we hope that you will be able to complete all five tasks of these challenges.