Traditional Chinese herbal theory does not view your pet's behavioral changes as a "personality" or to an "emotional" problem but rather there is some sort of an internal traditional theory of organ disharmony. Thus in the case of stress and anxiety we look to the Heart system since it is the organ is assigned job of governing the blood and vessels along with storing the spirit (the spirit is called shen)
i.e. the heart is responsible for moving the blood around the body and it is the seat of consciousness and mental vitality.
This herbal formula addresses Heart Blood Vacuity pattern:
When Heart Blood is vacuous it causes agitation because the body does not receive nourishment provided by Blood. The Heart, because of this depletion, is unable to restrain the Heart Spirit and this creates a disharmony of the Spirit-affect. This can manifest as abstraction, uncontrollable fear, and a desire to cry.
The words that best describe the pattern of Heart Blood Vacuity are; nervousness, hiding, hypersensitivity to noise or unexpected touch, restless sleep, hyperactive, and lack of concentration.
Blood is Yin and Blood anchors the spirit, when Yin has failed to be transformed, the Heart can not contain the Spirit. The emotions become unstable and uncontained. This formula is to used to nourish Yin to contain the Heart Spirit.