Both have the ability to absorb the energy but in animals it can take a lessor time then humans. When an animal is ill she will usually accept the healing energy. When she is ready to pass over, they will often reject it. Pets could also reject it at other times, especially when they wish to be on the move. On Babies, Reiki can aide in relaxing and putting them to sleep.
Babies usually like it at any time and find it refreshing as well.
Reiki, can be used highly effective with gemstones and crystals. All stones must be thoroughly cleansed before use and charged with your hand energy field. In using this method the Reiki energy positions are used on the chakra areas and can highly enhance the effect. With energy transformation you bring Ki from the Earth into the body, that you are working on. Reiki can also be used for self healing.