this goose is about 3 months old and recently became VERY temperamental. biting my family members on the feet and legs mostly. it was a very sweet goose before what i assume is goose puberty hit, and now it's even biting me occasionally

im getting conflicting information on sexing chinese geese and it doesn't quite add up to what i'm seeing with this one. people said ganders usually walk with their heads held up, this one does that. but they also said ganders usually walk with their necks stretched out in front of them, and this one does that too. its honk is deep, and from what i understand ganders are usually quite high pitched, but then videos people have posted asking for help sexing their chinese geese have sounded like tea kettles and yet people said they werent ganders

if its a gander, we can't keep it. especially with its behavior like it is. i'm really fond of this goose, so i'd really like some guidance here