The most common and most likely answer to this crossword clue is the 9 letter word OMNIVORES
I've seen this crossword clue in The Daily Telegraph
O
M
N
I
V
O
R
E
S
More clues leading to the result OMNIVORES
Buddy explains!

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 OMNIVORES mean?
OMNIVORES noun- An animal which is able to consume both plants (like a herbivore) and meat (like a carnivore).