Strips off and goes back to sleep (5)
I believe the answer is:
peels
'strips off' is the definition.
(I've seen this before)
'goes back to sleep' is the wordplay.
'goes back' says the letters should be written in reverse.
'sleep' backwards is 'PEELS'.
'and' acts as a link.
(Other definitions for peels that I've seen before include "Removes the skin from an orange" , "Removes skin, rind" , "Strips off" .)