Palpation ( neurological sense of knowing what you are feeling) and Chiropractic adjustment skills are indeed skills that can only be acquired thru a guided lab and practice with a instructors critique along with onsite q and a.
These skills like all tactile skills are acquired over time with repeated interaction. Just like in Chiro or Vet School. There is no way you could become a Chiropractor or Veterinarian with an online course. That being said, the Online Animal Chiropractic Courses may give you the information to pass a test but in no way would you have developed the tactile skills to start adjusting animals.