I got a notification that I completed the wonderful pet owner quest but when I talked to Dalair, it said I couldn’t complete the quest cause I didn’t meet the requirements. I gave my yeti another snack to bring his closeness to 1500 and this still didn’t work. I then unequipped then re-equipped my yeti but this brought his closeness down to 1301 and his fullness to 55 even though I just fed him. I’m guessing this is a bug cause I can’t complete the quest now and my closeness went down by 200 for no reason.
+1, having the same issue, except my pet's closeness just dropped all the way back to 1 after I had fed it up to 1600.