News Analysis: Polar Bears: An Anthropomorphic View Seems Logical when looking at the Polar Bear Sow and her Female Cub. This Largest of Land Carnivores is an impressive creature which can weigh up to 250Kg (550 Lbs.) and be up to 2.5 m (8+Ft.) long.
Without being overly Subjective, one can hypothesize that the Instinctual Behavior being evidenced, may display obvious Affection on the behalf of both Bears. The Symbiotic Relationship of Sow to Cub Physically and Emotionally is easy to understand; the possible Emotional Benefit flowing to the Sow by the Actions of the Cub is easy to grasp; Historical Ill-Treatment by Mankind to both Sow and Cub, anywhere in the Wilds where they are found, is Not.
Reality.
Reference: http://siberiantimes.com/other/others/features/ultimate-love-between-mother-and-daughter/