Panda
The giant panda possesses what researchers term supernormal stimuli—features that trigger exaggerated nurturing responses in humans. The large head, round face, and eye patches mimic infant facial proportions that humans evolved to find compelling. Studies demonstrate measurable cortisol reduction in subjects viewing panda imagery. The species' apparent clumsiness, its habit of tumbling without apparent distress, activates protective instincts across cultures.
Panda cubs, weighing merely 100 grams at birth—approximately 1/900th of maternal weight—represent the most extreme size disparity in placental mammals. This biological curiosity, combined with the species' documented difficulty breeding, creates narrative tension that enhances emotional engagement. Humans root for pandas to survive because pandas seem incapable of surviving alone.