Yes, Han, about these dog-like African mammals (6)
I believe the answer is:
hyenas
'mammals' is the definition.
(hyena is a kind of mammal)
'yes han about' is the wordplay.
'about' indicates anagramming the letters.
'yes'+'han'='yeshan'
'yeshan' with letters rearranged gives 'HYENAS'.
'these dog-like african' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for hyenas that I've seen before include "Dog-like animals that sound as if they laugh" , "Dog-like animals with cry like human laughter" , "Animal whose cry sounds like wild laughter" , "Dog-like animal of Africa" , "Dog-like nocturnal carrion feeders" .)