Returned tail-less animal’s posterior (4,4)

I believe the answer is:

came back

I'm a little stuck... Click here to teach me more about this clue!

'returned' is the definition.
('come back' can be a synonym of 'return')

'tail-less animal's posterior' is the wordplay.
'tail-less animal' becomes 'came' (I can't justify this - if you can you should give a lot more credence to this answer).
'posterior' becomes 'back' (associated in meaning).
'came'+'back'='CAME BACK'

Can you help me to learn more?

I've seen this clue in The Hindu.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.