The most common and most likely answer to this crossword clue is the 8 letter word MEERKATS
I've seen this crossword clue in Financial Times
M
E
E
R
K
A
T
S
More clues leading to the result MEERKATS
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 = meerkats.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 MEERKATS mean?
MEERKATS noun- Suricata suricatta, a small carnivorous mammal of the mongoose family, from the Kalahari Desert, known for its habit of standing on its hind legs.