Travel with artist carrying sick animal (7)
I believe the answer is:
gorilla
'animal' is the definition.
(I've seen this before)
'travel with artist carrying sick' is the wordplay.
'travel' becomes 'go' ('go' can be a synonym of 'travel'**).
'with' says to put letters next to each other.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'carrying' indicates putting letters inside.
'sick' becomes 'ill' ('ill' can be a synonym of 'sick').
'ra' going around 'ill' is 'rilla'.
'go'+'rilla'='GORILLA'
(Other definitions for gorilla that I've seen before include "The biggest ape" , "thug" , "Endangered anthropoid" , "Big ape" , "A large powerful African ape" .)