Okay, I'd like to leave some tidbit of information and then my answer because a lot of answers to this question relates to the origin of the concept of A/B/O. (This is gonna be really long, btw.)
The A/B/O categorization doesn't actually exist in the nature of wolves.
In 1947, an animal behaviorist named Rudolph Schenkel conducted research on ...... reply
Akunin-zura Shita B-kyuu Boukensha: Shujinkou to Sono Osananajimi-tachi no Papa ni Naru is manga is really liked at first because it was so cute and fluffy (≧∀≦)
And then they started treating a child character like she was a love interest...kinda? She's a preteen and she's one of the oldest of the kids he adopts, but instead of describing he...... reply