Will it bleat if you don't take it for a walk? (8)
I believe the answer is:
'it for a walk?' is the definition.
The definition suggests a singular noun which matches the answer.
'will it bleat if you don't take' is the wordplay.
I cannot quite understand how this works, but
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found in the answer.
'take' could be 'do' (eg taking or doing drugs) and 'do' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sheepdog that I've seen before include "Pastoral assistant?" , "Shaggy-haired canine" , "Farmer's herding helper" , "One drives over fields" , "Working farm animal" .)