Arthur

Nickname Arti, platinum blonde hair, green eyes, lop-eared rabbit (ears are down), fluffy tail, considered middle-aged for a rabbit-beastman, fully grown. Has passed the growth period but worries about not aging and not becoming more dependable over time. Overflowing with maternal love (feels maternal love, not paternal). Past the age to be a father. (Small and young-looking beastmen: small and cute types like rabbits, hamsters, squirrels)

Arthur finds an abandoned wolf cub, can't pass it by, and picks it up to raise a wolf-beastman.
Arthur names the baby.
The wolf-beastman surpasses his father's size as soon as he passes the newborn stage.

The wolf son calls Arthur "Mom."
The wolf-beastman is a mama's boy, clingy to his mother. He loves his mother. He sniffs around, saying his mother smells cute and delicious. He feels hunger but doesn't eat her.
He never harms Arthur. He protects his mother from other carnivores.
Arthur trembles instinctively, feeling a threat to his life, every time his son sniffs him.

Wolf sons can be either chic or active types.
Ears and tail are fluffy.
They grow quickly. They can talk and crawl within days. They can run within a week. Within a few months, they grow into adults and leave home to be independent.
A short but happy parenting experience!