Baby Fae body began generating isohaemagglutinins, but a suitable donor could not be found in time. Prior to the procedure, no infant heart transplant—even with human hearts—had been successfully performed due to a lack of infant human hearts. To address this issue, Bailey had become a pioneer in the research of cross-species heart transplants, which had included "more than 150 transplants in sheep, goats, and baboons". Multiple surgeons had previously experimented with baboon heart implants, leading some to speculate even that baboons could be farmed in the future for such purposes. When asked why he had picked a baboon over a primate
Olive baboon widespread success is that the olive baboon is omnivorous. As such it is able to find nutrition in almost any environment, and it is able to adapt with different foraging tactics. For instance, the olive baboon in grassland goes about finding food differently from one in a forest. The baboon forages on all levels of an environment, above and beneath the ground and in the canopy of forests. Most animals only look for food at one level; an arboreal species such as a lemur does not look for food on the ground. The olive baboon searches as wide an area