The most common and most likely answer to this crossword clue is the 8 plus 5 letter word PREGNANT PAUSE
I've seen this crossword clue in Independent
P
R
E
G
N
A
N
T
P
A
U
S
E
Buddy explains!
The straight part
We know that "Moment of anticipation/Tiger Feet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case moment of anticipation/tiger feet = pregnant pause.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.