Foot (3)
'foot' is the definition.
(I know that paw is a type of foot)
This is all the clue.
(Other definitions for paw that I've seen before include "Animal foot or hill-billy dad" , "Manhandle" , "Eg, a dog's foot" , "Cat's foot" , "Animal's foot" .)
(Other definitions for spa that I've seen before include "town for his health!" , "town in Belgium" , "Cheltenham or Bath?" , "Boston" , "Healthy place" .)
(Other definitions for fetish that I've seen before include "charm" , "Object worshipped for its supposed power" , "thing?" , "Object worshipped by primitive people or fixation (6)" , "Obsession" .)