The most common and most likely answer to this crossword clue is the 3 letter word ROE
R
O
E
More clues leading to the result ROE
- Drooled off and on, finding caviar
- Eggs for two people, ultimately
- Caviar that’s rank, we’re told
- Eggs coming inside from hen
- Eggs: run out by start of evening
- Eggs in a line picked up?
- Food from fish regularly taken from Rhone
- Eggs run out before start of Easter
- For starters restaurant offers exotic caviare
- Creature seen in Rhodes, oddly
Buddy explains!

The straight part
We know that "Creature" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case creature = roe.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 ROE mean?
ROE noun- The eggs of fish.
- The sperm of certain fish.
- The ovaries of certain crustaceans.
- Short for roe deer.
- A mottled appearance of light and shade in wood, especially in mahogany.