Pack animal brings everything back around morning (5)
I believe the answer is:
llama
'pack animal' is the definition.
(llamas are often used as pack animals)
'everything back around morning' is the wordplay.
'everything' becomes 'all' (all things).
'back' says the letters should be written backwards.
'around' is a reversal indicator.
'morning' becomes 'am' (as in 12:00 AM).
'all' in reverse letter order is 'lla'.
'am' back-to-front is 'ma'.
'lla'+'ma'='LLAMA'
'brings' acts as a link.
(Other definitions for llama that I've seen before include "one that ruminates" , "S American animal related to the camel" , "S.American animal" , "20vian beast" , "South American animal like the camel" .)