Family animal (3)
I believe the answer is:
pet
'family animal' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pet that I've seen before include "Favourite, darling" , "Caress or fondle, as with favourite" , "Caress - budgie, perhaps?" , "Darling; fit of sulks" , "House animal; sulk" .)