Bottom of grand robe ruined by male dog (8)
I believe the answer is:
Here is my best explanation:
'dog' is the definition.
(Doberman is an example)
'bottom of grand robe ruined by male' is the subsidiary indication.
'bottom of' says to take the final letters.
'ruined' indicates an anagram.
'by' says to put letters next to each other.
'male' becomes 'man' (man is a kind of male**).
The final letter of 'grand' is 'd'.
'robe' is an anagram of 'ober'.
(Other definitions for doberman that I've seen before include "Long-legged terrier", "Big dog", "...pinscher, large dog", "Originally German breed of watchdog" and "Dog used as guard - bond mare (anag)".)