Affectionate pooch welcomes time at home (6)
I believe the answer is:
doting
'affectionate' is the definition.
(I've seen this before)
'pooch welcomes time at home' is the wordplay.
'pooch' becomes 'dog' (pooch can informally mean a dog).
'welcomes' indicates putting letters inside (in sense of 'invites in').
'time' becomes 't' (abbreviation).
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
't'+'in'='tin'
'dog' enclosing 'tin' is 'DOTING'.
(Other definitions for doting that I've seen before include "Overly fond, as husband may be" , "Showing excessive love" , "Foolishly loving and indulgent" , "Excessively fond" , "Overly fond of, say spouse" .)