The most common and most likely answer to this crossword clue is the 8 letter word POLECATS
I've seen this crossword clue in The Daily Telegraph
P
O
L
E
C
A
T
S
More clues leading to the result POLECATS
Buddy explains!

The straight part
We know that "Animals" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case animals = polecats.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 POLECATS mean?
POLECATS noun- A weasel-like animal of the genus Mustela.
- A skunk.
- A tubular device used to support lights on a set.