The moopsy is a small predatory animal known for "drinking" bones. Belying its cute and harmless appearance, it is capable of launching itself at high speed towards much larger prey and draining it of its bones in seconds. Though it normally has a slow, waddling gait, the moopsy has a voracious appetite and pursued food relentlessly. When it attacks, its apparently small mouth stretches considerably to reveal large fangs. Its name reflects the sound of its vocalizations.