If the only things listed as "clinical experience" on an application were hippotherapy and maybe a little shadowing, some members of my adcom absolutely would "condemn" the applicant has having had too little clinical experience. It would be a seriously deficient application. If one were to add EMT training without having worked or volunteered as an EMT and call it "volunteer, clinical" , again, the assessment would be that the application was sub-par. Add a semester of playing the piano in the day room of a nursing home or coaching Special Olympics and call that clinical volunteering.
1)hippotherapy
2)shadowing x 20 hours
3) EMT training, not used
4) set foot in a nursing home or coached developmentally disabled kids
All that put together and tell me that it is sufficient clinical experience. I can tell you that many adcoms would want to see more experience in health care settings working with or near physicians or physician extenders.
Anyone can get on their high horse and make hippothearpy their pet project but it is not going to fly with some old time docs who want to see the usual hospital, hospice or clinic volunteering.