Vessel confusing to a pet (6)
I believe the answer is:
teapot
'vessel' is the definition.
(I know that Teapot is a teapot)
'confusing to a pet' is the wordplay.
'confusing' is an anagram indicator.
'to'+'a'+'pet'='toapet'
'toapet' with letters rearranged gives 'TEAPOT'.
(Other definitions for teapot that I've seen before include "Hot drink dispenser" , "Spouted holder" , "Container for a brew" , "What mother perhaps holds" , "where one might find leaves" .)