Sure, love a furry animal back (4)
I believe the answer is:
okay
'sure' is the definition.
(thesaurus)
'love a furry animal back' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'a furry animal' becomes 'yak' (I have seen 'Tibetan animal ' mean 'yak' so perhaps 'animal' could also mean 'yak'. I am not sure about the 'furry' bit.).
'back' says the letters should be written backwards.
'yak' in reverse letter order is 'kay'.
'o'+'kay'='OKAY'
Can you help me to learn more?
(Other definitions for okay that I've seen before include "Common jargon for yes, all right" , "Yes; satisfactory" , "Alright" , "Satisfactory; permissible" , "in order" .)