A short-legged breed of dog (5)
I believe the answer is:
corgi
'a short-legged breed of dog' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for corgi that I've seen before include "Dog of Welsh breed, royal favourite" , "pet in 9 [CARDIFF]?" , "Welsh breed of short-legged dog" , "The Queen's favourite?" , "man's best friend" .)