sheep-biter

noun2

1. •
   (no longer used) A sheepdog that worries (chases or attacks) sheep.
2. •
   (offensive, no longer used) A contemptible person, especially one who practices petty thefts.

   • A poor man has but one ewe, and this grandee sheep-biter leaves whole flocks of fat wethers, whom he may knock down, to deuour this. — 1604