Docs for kitties (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
vets
(Other definitions for vets that I've seen before include "Siegfried and Tristan Farnon, for example" , "Checks out" , "Ex-servicemen and women, in short" , "Inspects (animals?)" , "Examines the animal doctors carefully?" .)