wolfishly

/ˈwʊlfɪʃli/
adverb
  1. In a way that is like a wolf; often meaning hungrily, greedily, or with a fierce or predatory look.
    • She stared wolfishly at the last piece of chocolate cake.
    • He grinned wolfishly and took another slice of pizza.
    • The hungry hikers ate wolfishly after their long trek.