hound or an animal down

hound down

To hunt, chase, or pursue someone relentlessly, until they can be captured or apprehended. A noun or pronoun can be used between "hound" and "down." Police were able to hound down the suspect en route to Mexico.
See also: down, hound
Farlex Dictionary of Idioms.

hound someone or an animal down

to pursue and capture someone or an animal. I will hound the killer down if it takes me the rest of my life. I will hound down that killer if it takes years.
See also: animal, down, hound
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • not do (someone or oneself) any favors
  • ask back
  • (Is) this taken?
  • angle
  • angling
  • interpret for
  • interpret for (someone)
  • rescue from
  • rescue from (someone or something)
  • identify with