Grants 250 XP upon completion.
- Kills are valid if made with either the standard and GRA version of the Fat Man, Fat mines, or Esther.
- Killing an animal by physically hitting it with a timed mini nuke will count toward the total, even though the nuke hasn't actually exploded.
- Mutated animals do not count, only regular animals such as ravens, coyotes, and all types of dog, including NCR, Legion, and Fiend dogs.
- This challenge is not repeatable.