The most common and most likely answer to this crossword clue is the 7 letter word COUGARS
C
O
U
G
A
R
S
More clues leading to the result COUGARS
Buddy explains!

The straight part
We know that "cats" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cats = cougars.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 COUGARS mean?
COUGARS noun- A mountain lion; Puma concolor.
- An older woman who actively seeks the casual, often sexual, companionship of younger men, by implication a female “sexual predator”.