Responses
I thought he was the puppy too, but the puppy died 2 years ago and the goblin lost his memory 20 years ago.
http://www.mangago.zone/read-manga/fate_makes_no_mistakes/nto/to_chapter-19/1/ (Page 10)
I don't know when the idea popped in my mind but what if the white haired boy object was the dog? Like the puppy was a the object that gave birth to him dog? I mean he acts like a puppy ( cute and obedient) at times. He also said that he has no clue what his birth object was( yet I feel like that conversation was key). The dog owner loved the dog and now he seems really close and doesn't want to loose the white haired guy ( almost like he can feel it's his puppy). I also thinks it odd that the other goblin somewhat forced him to take care of the dog owner ( like a he is trying to reunite them). Also his hair just looks soooo fluffy and it's the same color as his dog ( that grayish white). Just an idea but I thought it would be cute if his puppy could come back to him in a way.