The most common and most likely answer to this crossword clue is the 6 letter word MIAOWS
I've seen this crossword clue in The Sunday Telegraph
M
I
A
O
W
S
More clues leading to the result MIAOWS
Buddy explains!

The straight part
We know that "sounds catty?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sounds catty? = miaows.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 MIAOWS mean?
MIAOWS noun- The cry of a cat.
- The drug mephedrone.
- Of a cat, to make its cry.