The most common and most likely answer to this crossword clue is the 4 letter word WOLF
I've seen this crossword clue in The Sunday Telegraph
W
O
L
F
More clues leading to the result WOLF
- Predatory male one’s doing well to keep from the door
- Predator in northward run
- It's a meat-eating wild animal — gulp!
- Carnivore has to run back
- Hurriedly get down street in time for call from an admirer
- Run up with less crude appreciative noises
- Bolt to run smoothly making comeback
- Eat ravenously when course is over
- Bolt’s smooth progress on return
- Run over wild animal
Buddy explains!
The straight part
We know that "Pack animal" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pack animal = wolf.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WOLF mean?
WOLF noun- The gray wolf, specifically all subspecies of the gray wolf (Canis lupus) that are not dingoes or dogs.
- A man who makes amorous advances to many women.
- A wolf tone or wolf note.
- Any very ravenous, rapacious, or destructive person or thing; especially, want; starvation.
- One of the destructive, and usually hairy, larvae of several species of beetles and grain moths.
- A white worm, or maggot, which infests granaries.
- An eating ulcer or sore. See lupus.
- A willying machine.
- To devour; to gobble; to eat (something) voraciously.
- To make amorous advances to many women; to hit on women; to cruise for sex.
- To hunt for wolves.