It is tempting to try to raise cute wild orphans yourself. However, his is usually not in the best interests of the animal. Providing the correct diet and housing is expensive and time consuming. Remember that babies must be taught to recognize and catch natural foods and must have large spaces in which to become accustomed to weather and to exercise their muscles so they will be fit to support themselves when released. In addition, if they are not properly socialized, they will likely meet a quick demise upon release.
Abnormal behavior causes others of the species to react to the orphan with aggression.
Normally, only wild animals suffering from rabies or other nervous system diseases willingly approach people. A human raised wild baby can easily become imprinted on humans and seek them out when put back into the wild. If this happens, they are likely to be assumed disease carriers, and destroyed. Licensed wildlife rehabilitators have the knowledge and facilities to care for the animal for the months it often takes to prepare it for a successful return to the wild. It is illegal to keep wildlife even for a few months without state and federal permits.