Breed of dog that will change someday (7)
I believe the answer is:
samoyed
'breed of dog' is the definition.
(I've seen this before)
'will change someday' is the wordplay.
'someday' can be anagrammed to 'SAMOYED'.
However, I'm not clear how the anagram is indicated.
'that' is the link.
Can you help me to learn more?
(Other definitions for samoyed that I've seen before include "Breed of white dog from Siberia - May's ode (anag)" , "Arctic dog" , "Dog similar to chow" , "[HOUND] ?" , "Some day (anag) - dog (from Siberia?)" .)