emotions of love and closeness felt between persons and animals, whether between two people, two animals, or one of each. Such binding ties are developed via engaging behaviors such as snuggling, petting, and holding. The existence of sentimental binding ties is additionally proven by the feeling of loss, despair, and worry that are often felt during times of distance between the two parties. Reference: separation anxiety.
AFFECTIONAL BONDS: "Affectional bonds exist between virtually all mothers and their offspring."